Solved Frequent BSOD crashes

all seems OK with Prime95

Thanks Jonathan. Won't post any more reports for now. Just returned to find computer had shut down and restarted again. It had seemed to be running well in Prime95. Will try the small fft test again and leave it running until something happens. Just remembered I haven't run the Intel test. OOps, screen just began rotating. Hope that's a part of the Intel test. yep, it is.
I thought I had posted a reply to say that the Intel test passed. Am now running small FFT test. All workers are on par, and temps are all OK.
Still running OK after more than an hour. No high temps, max 72, 76, 75, 72: currently 70-74. Will leave it running a while longer as have to go out and shop.
Well, there doesn't seem any problem with Prime95. After more than 2* hours, all cores are happily chugging along at about the same point. No temp probs.
I can't really take the computer back to supplier with no specific problem.
They supplied it to me assembled and with OS and MB software installed. At that stage it seemed to be running well, although I cannot now tell if it had any inherent struggles. What's our next move?
More than 4 hours!
 
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My Computer

OS
windows 7 home premium 64
CPU
Intel core i5 2500 4x3.3GHz LGA 1155 6MB cache
Motherboard
Gigabyte GA-Z68X-UD3H-B3
Memory
2 Kingston 4GB 1333MHz DDR3 NON ECC
Graphics Card(s)
none
Sound Card
none
Monitor(s) Displays
LG Flatron W2252TQ
Hard Drives
"C" OCZ VERTEX 3 120GB SATA III 2.5"
WD 1TB SATA III 3.5"64MB Caviar Green Intellipower
PSU
Coolermaster 500W
Case
Coolermaster Elite 431P
Cooling
-
A re-start when running prime95 indicates a failure, it will normally run until you stop it.

It is possible that the CPU voltage is just a little low for your system.
Let's check the idle and full load CPU voltages.
Can you Download CPUZ and post a snip of the CPU, Mainboard, Memory, and SPD tabs with your system at idle, for general information.
For posting the information , enter 'Snipping tool' in the Start button > Search box, hit enter. Select the area you want to post and save to a convenient place.
How to Post a Screenshot in Seven Forums
Then start up Prime95 with CPUZ running, post a snip of the CPU tab.
Then we can see the Core speed and current voltage at idle and under full load.

How old is your OCZ Vertex 3?
What firmware does it have?
 

My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
76~2.0
OS
Windows 7 Ult x64 - SP1/ Windows 8 Pro x64
CPU
Intel Core i5-3570K 4.6GHz
Motherboard
Gigabyte GA-Z77X UD3H, f18
Memory
8GB (2X4GB) DDR3 1600 Corsair Vengeance CL8 1.5v
Graphics Card(s)
Sapphire HD 7770 Vapor-X OC 1GB DDR5
Sound Card
Onboard VIA VT2021
Monitor(s) Displays
22" LCD Dell
Screen Resolution
1680x1050
Hard Drives
Samsung 840Pro 128GB SSD,
Seagate Barracuda 500GB SATA2 7200rpm 32MB cache, Seagate Barracuda 1TB SATA2 7200rpm 32MB cache,
PSU
Corsair HX650W
Case
Cooler Master Storm Scout
Cooling
Corsair H80 2x12cm Noctua NF P12 , 2x14cm case fans
Keyboard
Logitech Wave
Mouse
CM Sentinel
Internet Speed
Dismal
Antivirus
Avast
Browser
Opera Next
Other Info
Haswell laptop: HP Envy 17t-j, i7-4700MQ, GeForce 740M 2GB DDR3, 17.3" Full HD 1920x1080, 16GB RAM, Samsung 840 Pro 128GB, 1TB Hitachi 7200 HDD,
Desktop: eSATA ports,
External eSATA Seagate 500GB SATA2 7200rpm,
External WD USB 500GB
crashed again

crashed again at 3pm. event viewer entries only relate to restart, saying earlier shutdown was unexpected. Have now seen Jonathan's message #82 and will do that soon. Bob 3:45pm
 
Last edited:

My Computer

OS
windows 7 home premium 64
CPU
Intel core i5 2500 4x3.3GHz LGA 1155 6MB cache
Motherboard
Gigabyte GA-Z68X-UD3H-B3
Memory
2 Kingston 4GB 1333MHz DDR3 NON ECC
Graphics Card(s)
none
Sound Card
none
Monitor(s) Displays
LG Flatron W2252TQ
Hard Drives
"C" OCZ VERTEX 3 120GB SATA III 2.5"
WD 1TB SATA III 3.5"64MB Caviar Green Intellipower
PSU
Coolermaster 500W
Case
Coolermaster Elite 431P
Cooling
-
A re-start when running prime95 indicates a failure, it will normally run until you stop it.

It is possible that the CPU voltage is just a little low for your system.
Let's check the idle and full load CPU voltages.
Can you Download CPUZ and post a snip of the CPU, Mainboard, Memory, and SPD tabs with your system at idle, for general information.
For posting the information , enter 'Snipping tool' in the Start button > Search box, hit enter. Select the area you want to post and save to a convenient place.
How to Post a Screenshot in Seven Forums
Then start up Prime95 with CPUZ running, post a snip of the CPU tab.
Then we can see the Core speed and current voltage at idle and under full load.

How old is your OCZ Vertex 3?
What firmware does it have?
Attached 3 screenshots. The OCZ Vertex 3 was purchased with system 23 Feb 2012. Haven't attempted to upgrade its driver
 

My Computer

OS
windows 7 home premium 64
CPU
Intel core i5 2500 4x3.3GHz LGA 1155 6MB cache
Motherboard
Gigabyte GA-Z68X-UD3H-B3
Memory
2 Kingston 4GB 1333MHz DDR3 NON ECC
Graphics Card(s)
none
Sound Card
none
Monitor(s) Displays
LG Flatron W2252TQ
Hard Drives
"C" OCZ VERTEX 3 120GB SATA III 2.5"
WD 1TB SATA III 3.5"64MB Caviar Green Intellipower
PSU
Coolermaster 500W
Case
Coolermaster Elite 431P
Cooling
-
3 more screenshots. Had misread request.
 

My Computer

OS
windows 7 home premium 64
CPU
Intel core i5 2500 4x3.3GHz LGA 1155 6MB cache
Motherboard
Gigabyte GA-Z68X-UD3H-B3
Memory
2 Kingston 4GB 1333MHz DDR3 NON ECC
Graphics Card(s)
none
Sound Card
none
Monitor(s) Displays
LG Flatron W2252TQ
Hard Drives
"C" OCZ VERTEX 3 120GB SATA III 2.5"
WD 1TB SATA III 3.5"64MB Caviar Green Intellipower
PSU
Coolermaster 500W
Case
Coolermaster Elite 431P
Cooling
-
Is this correct? I thought I would see a boot partition and another for programs.
 

My Computer

OS
windows 7 home premium 64
CPU
Intel core i5 2500 4x3.3GHz LGA 1155 6MB cache
Motherboard
Gigabyte GA-Z68X-UD3H-B3
Memory
2 Kingston 4GB 1333MHz DDR3 NON ECC
Graphics Card(s)
none
Sound Card
none
Monitor(s) Displays
LG Flatron W2252TQ
Hard Drives
"C" OCZ VERTEX 3 120GB SATA III 2.5"
WD 1TB SATA III 3.5"64MB Caviar Green Intellipower
PSU
Coolermaster 500W
Case
Coolermaster Elite 431P
Cooling
-
You'll have to hit Populate in order to see the volumes.

Dave - he is using Vertex 3 firmware 2.15:
Code:
Win32_DiskDrive.DeviceID="\\\\.\\PHYSICALDRIVE1" PropertyValueBytesPerSector512ConfigManagerErrorCode0DescriptionDisk drive[COLOR=Red][B]FirmwareRevision2.15[/B][/COLOR]Index1InterfaceTypeIDEMediaLoaded-1MediaTypeFixed hard disk mediaModelOCZ-VERTEX3Name\\.\PHYSICALDRIVE1Partitions2SCSIBus0SCSILogicalUnit0SCSIPort0SCSITargetId1SectorsPerTrack19SerialNumberCO-ZN737QPAG3VBL9917Signature447289188Size120032002048TotalCylinders55084TotalHeads224TotalSectors234437504TotalTracks12338816TracksPerCylinder224
 

My Computer

Computer Manufacturer/Model Number
Custom
OS
Windows 7 Professional x64
CPU
Intel i7 2600K OC'd @ 4620 MHz
Motherboard
Asus P8Z68-V Pro
Memory
16GB GSkill Sniper 2133 Mhz (4x4GB)
Graphics Card(s)
EVGA GeForce GTX 480 SuperClocked+
Sound Card
Realtek High Definition Audio
Monitor(s) Displays
2x Acer S273HLbmii 27"
Screen Resolution
2 x 1920x1080
Hard Drives
64GB Crucial M4 SSD

Storage: Hitachi 1TB 5400RPM, Samsung 1.5TB 5400RPM
PSU
Corsair HW Series 750w (modular)
Case
Cooler Master HAF 932 Advanced Blue Edition
Cooling
CM Hyper 212+ CPU cooler, 3x 230mm + 1x 140mm case fans
Keyboard
Logitech MK320 (wireless)
Mouse
Logitech MK320 (wireless)
Internet Speed
30 Mb/s : 2 Mb/s
You'll have to hit Populate in order to see the volumes.

Dave - he is using Vertex 3 firmware 2.15:
Code:
Win32_DiskDrive.DeviceID="\\\\.\\PHYSICALDRIVE1" PropertyValueBytesPerSector512ConfigManagerErrorCode0DescriptionDisk drive[COLOR=red][B]FirmwareRevision2.15[/B][/COLOR]Index1InterfaceTypeIDEMediaLoaded-1MediaTypeFixed hard disk mediaModelOCZ-VERTEX3Name\\.\PHYSICALDRIVE1Partitions2SCSIBus0SCSILogicalUnit0SCSIPort0SCSITargetId1SectorsPerTrack19SerialNumberCO-ZN737QPAG3VBL9917Signature447289188Size120032002048TotalCylinders55084TotalHeads224TotalSectors234437504TotalTracks12338816TracksPerCylinder224
I tried 'populate' but nothing changed. I'm not sure what the above data means though.
 

My Computer

OS
windows 7 home premium 64
CPU
Intel core i5 2500 4x3.3GHz LGA 1155 6MB cache
Motherboard
Gigabyte GA-Z68X-UD3H-B3
Memory
2 Kingston 4GB 1333MHz DDR3 NON ECC
Graphics Card(s)
none
Sound Card
none
Monitor(s) Displays
LG Flatron W2252TQ
Hard Drives
"C" OCZ VERTEX 3 120GB SATA III 2.5"
WD 1TB SATA III 3.5"64MB Caviar Green Intellipower
PSU
Coolermaster 500W
Case
Coolermaster Elite 431P
Cooling
-
Have been running Prime95 for about 2 hours now since last crash. Here's the CPU status.
Won't be able to watch for any replies for about 8 hours from now.
 
Last edited:

My Computer

OS
windows 7 home premium 64
CPU
Intel core i5 2500 4x3.3GHz LGA 1155 6MB cache
Motherboard
Gigabyte GA-Z68X-UD3H-B3
Memory
2 Kingston 4GB 1333MHz DDR3 NON ECC
Graphics Card(s)
none
Sound Card
none
Monitor(s) Displays
LG Flatron W2252TQ
Hard Drives
"C" OCZ VERTEX 3 120GB SATA III 2.5"
WD 1TB SATA III 3.5"64MB Caviar Green Intellipower
PSU
Coolermaster 500W
Case
Coolermaster Elite 431P
Cooling
-
Computer shut down and restarted a number of times overnight. It seems to run for irregular periods, and as far as I can tell, only shut down about 3x in 8 hours. Have you been able to identify anything from the information sent so far?
I think I am about ready to take computer back to supplier and ask them to fix it if they can.
 
Last edited:

My Computer

OS
windows 7 home premium 64
CPU
Intel core i5 2500 4x3.3GHz LGA 1155 6MB cache
Motherboard
Gigabyte GA-Z68X-UD3H-B3
Memory
2 Kingston 4GB 1333MHz DDR3 NON ECC
Graphics Card(s)
none
Sound Card
none
Monitor(s) Displays
LG Flatron W2252TQ
Hard Drives
"C" OCZ VERTEX 3 120GB SATA III 2.5"
WD 1TB SATA III 3.5"64MB Caviar Green Intellipower
PSU
Coolermaster 500W
Case
Coolermaster Elite 431P
Cooling
-
Computer shut down and restarted a number of times overnight. It seems to run for irregular periods, and as far as I can tell, only shut down about 3x in 8 hours. Have you been able to identify anything from the information sent so far?
I think I am about ready to take computer back to supplier and ask them to fix it if they can.


It seems that my problem has been determined as being in the hardware, i.e. motherboard, CPU, or drive C. Am nowhere near pinpointing which, so have decided to seek help of the system builder. Maybe they can resolve the problem. Will post again in a few days I hope .
 

My Computer

OS
windows 7 home premium 64
CPU
Intel core i5 2500 4x3.3GHz LGA 1155 6MB cache
Motherboard
Gigabyte GA-Z68X-UD3H-B3
Memory
2 Kingston 4GB 1333MHz DDR3 NON ECC
Graphics Card(s)
none
Sound Card
none
Monitor(s) Displays
LG Flatron W2252TQ
Hard Drives
"C" OCZ VERTEX 3 120GB SATA III 2.5"
WD 1TB SATA III 3.5"64MB Caviar Green Intellipower
PSU
Coolermaster 500W
Case
Coolermaster Elite 431P
Cooling
-
Okay, well keep us posted!
 

My Computer

Computer Manufacturer/Model Number
Custom
OS
Windows 7 Professional x64
CPU
Intel i7 2600K OC'd @ 4620 MHz
Motherboard
Asus P8Z68-V Pro
Memory
16GB GSkill Sniper 2133 Mhz (4x4GB)
Graphics Card(s)
EVGA GeForce GTX 480 SuperClocked+
Sound Card
Realtek High Definition Audio
Monitor(s) Displays
2x Acer S273HLbmii 27"
Screen Resolution
2 x 1920x1080
Hard Drives
64GB Crucial M4 SSD

Storage: Hitachi 1TB 5400RPM, Samsung 1.5TB 5400RPM
PSU
Corsair HW Series 750w (modular)
Case
Cooler Master HAF 932 Advanced Blue Edition
Cooling
CM Hyper 212+ CPU cooler, 3x 230mm + 1x 140mm case fans
Keyboard
Logitech MK320 (wireless)
Mouse
Logitech MK320 (wireless)
Internet Speed
30 Mb/s : 2 Mb/s
Can you post the CPUZ SPD tab with the timing information?
Go to the 'Slot #' drop box and select another slot to get the information.

From your CPUZ CPU tab in post#84, the CPU voltage 1.176v, Vcore in BIOS, seems to be a little low, should be 1.23v at full load.
Page 43 of you motherboard manual: Gigabyte GA-Z68X-UD3H-B3
Check the 'CPU Vcore' voltage number and post the amount here, the setting should be on '[Auto]'.

While you're in BIOS, post the QPI/Vtt voltage, that is the CPU integrated memory controller voltage.
Also the Dram voltage.
 

My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
76~2.0
OS
Windows 7 Ult x64 - SP1/ Windows 8 Pro x64
CPU
Intel Core i5-3570K 4.6GHz
Motherboard
Gigabyte GA-Z77X UD3H, f18
Memory
8GB (2X4GB) DDR3 1600 Corsair Vengeance CL8 1.5v
Graphics Card(s)
Sapphire HD 7770 Vapor-X OC 1GB DDR5
Sound Card
Onboard VIA VT2021
Monitor(s) Displays
22" LCD Dell
Screen Resolution
1680x1050
Hard Drives
Samsung 840Pro 128GB SSD,
Seagate Barracuda 500GB SATA2 7200rpm 32MB cache, Seagate Barracuda 1TB SATA2 7200rpm 32MB cache,
PSU
Corsair HX650W
Case
Cooler Master Storm Scout
Cooling
Corsair H80 2x12cm Noctua NF P12 , 2x14cm case fans
Keyboard
Logitech Wave
Mouse
CM Sentinel
Internet Speed
Dismal
Antivirus
Avast
Browser
Opera Next
Other Info
Haswell laptop: HP Envy 17t-j, i7-4700MQ, GeForce 740M 2GB DDR3, 17.3" Full HD 1920x1080, 16GB RAM, Samsung 840 Pro 128GB, 1TB Hitachi 7200 HDD,
Desktop: eSATA ports,
External eSATA Seagate 500GB SATA2 7200rpm,
External WD USB 500GB
Can you post the CPUZ SPD tab with the timing information?
Go to the 'Slot #' drop box and select another slot to get the information.

From your CPUZ CPU tab in post#84, the CPU voltage 1.176v, Vcore in BIOS, seems to be a little low, should be 1.23v at full load.
Page 43 of you motherboard manual: Gigabyte GA-Z68X-UD3H-B3
Check the 'CPU Vcore' voltage number and post the amount here, the setting should be on '[Auto]'.

While you're in BIOS, post the QPI/Vtt voltage, that is the CPU integrated memory controller voltage.
Also the Dram voltage.
Sorry. Your message arrived too late. Only what I have posted already. Will see what readings i get when computer is repaired, hopefully within a few days. Bob
 

My Computer

OS
windows 7 home premium 64
CPU
Intel core i5 2500 4x3.3GHz LGA 1155 6MB cache
Motherboard
Gigabyte GA-Z68X-UD3H-B3
Memory
2 Kingston 4GB 1333MHz DDR3 NON ECC
Graphics Card(s)
none
Sound Card
none
Monitor(s) Displays
LG Flatron W2252TQ
Hard Drives
"C" OCZ VERTEX 3 120GB SATA III 2.5"
WD 1TB SATA III 3.5"64MB Caviar Green Intellipower
PSU
Coolermaster 500W
Case
Coolermaster Elite 431P
Cooling
-
Let us know what they did to fix it, and of coarse how it's running.
 

My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
76~2.0
OS
Windows 7 Ult x64 - SP1/ Windows 8 Pro x64
CPU
Intel Core i5-3570K 4.6GHz
Motherboard
Gigabyte GA-Z77X UD3H, f18
Memory
8GB (2X4GB) DDR3 1600 Corsair Vengeance CL8 1.5v
Graphics Card(s)
Sapphire HD 7770 Vapor-X OC 1GB DDR5
Sound Card
Onboard VIA VT2021
Monitor(s) Displays
22" LCD Dell
Screen Resolution
1680x1050
Hard Drives
Samsung 840Pro 128GB SSD,
Seagate Barracuda 500GB SATA2 7200rpm 32MB cache, Seagate Barracuda 1TB SATA2 7200rpm 32MB cache,
PSU
Corsair HX650W
Case
Cooler Master Storm Scout
Cooling
Corsair H80 2x12cm Noctua NF P12 , 2x14cm case fans
Keyboard
Logitech Wave
Mouse
CM Sentinel
Internet Speed
Dismal
Antivirus
Avast
Browser
Opera Next
Other Info
Haswell laptop: HP Envy 17t-j, i7-4700MQ, GeForce 740M 2GB DDR3, 17.3" Full HD 1920x1080, 16GB RAM, Samsung 840 Pro 128GB, 1TB Hitachi 7200 HDD,
Desktop: eSATA ports,
External eSATA Seagate 500GB SATA2 7200rpm,
External WD USB 500GB
Let us know what they did to fix it, and of coarse how it's running.
Yes, I will. The guys who assembled it seem very keen to rectify the problem. they have heard of sevenforums, and I suggested they first look at all my saved error files, etc. before they start doing any reinstallation and analysis. This is the first time I have dealt with them since the two guys bought the business a year ago (I wasn't at all keen on the original owner). I was impressed with their helpfulness when I first made enquiries. I was going to purchase all the components from a wholesaler and assemble it myself, but they gave me a really good price and undertook to look after anything like this. Thanks Dave and Jonathan. I really appreciate all your efforts.:D
 

My Computer

OS
windows 7 home premium 64
CPU
Intel core i5 2500 4x3.3GHz LGA 1155 6MB cache
Motherboard
Gigabyte GA-Z68X-UD3H-B3
Memory
2 Kingston 4GB 1333MHz DDR3 NON ECC
Graphics Card(s)
none
Sound Card
none
Monitor(s) Displays
LG Flatron W2252TQ
Hard Drives
"C" OCZ VERTEX 3 120GB SATA III 2.5"
WD 1TB SATA III 3.5"64MB Caviar Green Intellipower
PSU
Coolermaster 500W
Case
Coolermaster Elite 431P
Cooling
-
Let us know what they did to fix it, and of coarse how it's running.
Well, they checked it out and all seemed perfect. I suspect that my TV tuner card which was previously in the computer may have been the culprit. Since I brought computer home I have installed Office, printer drivers, Norton 360, Firefox and Thunderbird. I have also reconnected my backup drive and restored documents, bookmarks, etc. I seem to be again getting lots of errors - now mostly in Restart Manager. Can you tell me what is happening here?
p.s. I just disconnected the backup drive (which also has Windows Security Essentials backups), and did a restart. Now the only message is WMI one. Obviously there's some connection. Perhaps the Norton is trying to match data on startup and seeing different and unidentified folders? Or is the computer looking at the Windows SE backup and not finding the software to match?
 
Last edited:

My Computer

OS
windows 7 home premium 64
CPU
Intel core i5 2500 4x3.3GHz LGA 1155 6MB cache
Motherboard
Gigabyte GA-Z68X-UD3H-B3
Memory
2 Kingston 4GB 1333MHz DDR3 NON ECC
Graphics Card(s)
none
Sound Card
none
Monitor(s) Displays
LG Flatron W2252TQ
Hard Drives
"C" OCZ VERTEX 3 120GB SATA III 2.5"
WD 1TB SATA III 3.5"64MB Caviar Green Intellipower
PSU
Coolermaster 500W
Case
Coolermaster Elite 431P
Cooling
-
Can you post the information files from Blue Screen of Death (BSOD) Posting Instructions.
Even without actual crash dump files this will give us a lot of information that we can use to analyze this issue.

It appears that the system builder re-installed the OS, please verify.
Can we get more information on the system settings, since the settings were probably changed, we need to know where we are at now.

Can you download CPUZ and post a snip of the CPU, Mainboard, Memory, and SPD tabs.
Go to your BIOS and tell us what the CPU, RAM and the CPU integrated memory controller voltages are.
This is important information.
 

My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
76~2.0
OS
Windows 7 Ult x64 - SP1/ Windows 8 Pro x64
CPU
Intel Core i5-3570K 4.6GHz
Motherboard
Gigabyte GA-Z77X UD3H, f18
Memory
8GB (2X4GB) DDR3 1600 Corsair Vengeance CL8 1.5v
Graphics Card(s)
Sapphire HD 7770 Vapor-X OC 1GB DDR5
Sound Card
Onboard VIA VT2021
Monitor(s) Displays
22" LCD Dell
Screen Resolution
1680x1050
Hard Drives
Samsung 840Pro 128GB SSD,
Seagate Barracuda 500GB SATA2 7200rpm 32MB cache, Seagate Barracuda 1TB SATA2 7200rpm 32MB cache,
PSU
Corsair HX650W
Case
Cooler Master Storm Scout
Cooling
Corsair H80 2x12cm Noctua NF P12 , 2x14cm case fans
Keyboard
Logitech Wave
Mouse
CM Sentinel
Internet Speed
Dismal
Antivirus
Avast
Browser
Opera Next
Other Info
Haswell laptop: HP Envy 17t-j, i7-4700MQ, GeForce 740M 2GB DDR3, 17.3" Full HD 1920x1080, 16GB RAM, Samsung 840 Pro 128GB, 1TB Hitachi 7200 HDD,
Desktop: eSATA ports,
External eSATA Seagate 500GB SATA2 7200rpm,
External WD USB 500GB
Can you post the information files from Blue Screen of Death (BSOD) Posting Instructions.
Even without actual crash dump files this will give us a lot of information that we can use to analyze this issue.

It appears that the system builder re-installed the OS, please verify.
Can we get more information on the system settings, since the settings were probably changed, we need to know where we are at now.

Can you download CPUZ and post a snip of the CPU, Mainboard, Memory, and SPD tabs.
Go to your BIOS and tell us what the CPU, RAM and the CPU integrated memory controller voltages are.
This is important information.
Here are the three snips, plus the perfmon and Griff files. I cannot work out how to get the BIOS information. When I did a restart and pressed TAB key nothing more happened. Then I restarted again and pressed DEL, and looked at the BIOS power setup, but found nothing like the info you asked for. The last 3 restarts have not generated any messages in Event Viewer. I still have the external hard drive disconnected. I suspect my hunch was correct, at least in part, about some of the error messages relating to its presence. The OS was reinstalled by supplier. They also ran extensive tests and said that the CPU voltages are all running correctly - set to AUTO, and although lower than the picture in the MB manual (which they said is not indicative of the norm), they are all OK.
 

My Computer

OS
windows 7 home premium 64
CPU
Intel core i5 2500 4x3.3GHz LGA 1155 6MB cache
Motherboard
Gigabyte GA-Z68X-UD3H-B3
Memory
2 Kingston 4GB 1333MHz DDR3 NON ECC
Graphics Card(s)
none
Sound Card
none
Monitor(s) Displays
LG Flatron W2252TQ
Hard Drives
"C" OCZ VERTEX 3 120GB SATA III 2.5"
WD 1TB SATA III 3.5"64MB Caviar Green Intellipower
PSU
Coolermaster 500W
Case
Coolermaster Elite 431P
Cooling
-
Can you select another Slot for the CPUZ SPD tab, upper left corner, it should have RAM timing information.
Also post the CPU tab.

The voltages are the same ones requested checking before the re-install.
Page 43 of you motherboard manual: Gigabyte GA-Z68X-UD3H-B3
Check the 'CPU Vcore' voltage number and post the amount here, the setting should be on '[Auto]'.

While you're in BIOS, post the QPI/Vtt voltage, that is the CPU integrated memory controller voltage.
Also the Dram voltage.

There have been 28 crashes since the re-install.
20 on 10 April, 6 on 11 April, 2 on the 12 April.

All 28 are the same:
Code:
STOP 0x00000050: PAGE_FAULT_IN_NONPAGED_AREA
Usual causes:  Defective hardware (particularly memory - but not just RAM), Faulty system service, Antivirus,  Device driver, NTFS corruption, BIOS
Could not read faulting driver name
Probably caused by : AppleCharger.sys ( AppleCharger+280a )
This is likely a hardware fault, due to settings or component issue.
With the CPUZ tabs and voltage settings requested we can start adjusting some settings.

Bad or out of date drivers:
Code:
AF15BDA.sys  Wed Jun 03 08:58:22 2009
Looks like the TV tuner driver, uninstall this driver.

Go to the Gigabyte GA-Z68X-UD3H-B3 site and update all the drivers for your motherboard.

Event log errors:
Code:
Event[56]:
  Log Name: Application
  Source: Microsoft-Windows-WMI
  Date: 2012-04-14T14:41:50.000
  Event ID: 10
  Task: N/A
  Level: Error
  Opcode: N/A
  Keyword: Classic
  User: N/A
  User Name: N/A
  Computer: Bob-PC
  Description: 
Event filter with query "SELECT * FROM __InstanceModificationEvent WITHIN 60 WHERE TargetInstance ISA "Win32_Processor" AND TargetInstance.LoadPercentage > 99" could not be reactivated in namespace "//./root/CIMV2" because of error 0x80041003. Events cannot be delivered through this filter until the problem is corrected.
This indicates a CPU error, same as before.

Code:
Event[88]:
  Log Name: Application
  Source: Microsoft-Windows-CAPI2
  Date: 2012-04-14T12:04:24.254
  Event ID: 4107
  Task: N/A
  Level: Error
  Opcode: Info
  Keyword: Classic
  User: N/A
  User Name: N/A
  Computer: Bob-PC
  Description: 
Failed extract of third-party root list from auto update cab at: <http://www.download.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab> with error: A required certificate is not within its validity period when verifying against the current system clock or the timestamp in the signed file.
Looks like you have had a lot of Windows update failures.

There are errors that may be caused by the Anti Virus Norton, un-install Norton 360 for testing purposes.
First uninstall from the Control Panel > Programs and Features.
Then Run the Norton cleanup tool:
Download and run the Norton Removal Tool to uninstall your Norton product

Install MSE, this will run without causing errors.
Microsoft Security Essentials*- Free Antivirus for Windows

When we get the system stable, you can try Norton again, if you want.
 
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My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
76~2.0
OS
Windows 7 Ult x64 - SP1/ Windows 8 Pro x64
CPU
Intel Core i5-3570K 4.6GHz
Motherboard
Gigabyte GA-Z77X UD3H, f18
Memory
8GB (2X4GB) DDR3 1600 Corsair Vengeance CL8 1.5v
Graphics Card(s)
Sapphire HD 7770 Vapor-X OC 1GB DDR5
Sound Card
Onboard VIA VT2021
Monitor(s) Displays
22" LCD Dell
Screen Resolution
1680x1050
Hard Drives
Samsung 840Pro 128GB SSD,
Seagate Barracuda 500GB SATA2 7200rpm 32MB cache, Seagate Barracuda 1TB SATA2 7200rpm 32MB cache,
PSU
Corsair HX650W
Case
Cooler Master Storm Scout
Cooling
Corsair H80 2x12cm Noctua NF P12 , 2x14cm case fans
Keyboard
Logitech Wave
Mouse
CM Sentinel
Internet Speed
Dismal
Antivirus
Avast
Browser
Opera Next
Other Info
Haswell laptop: HP Envy 17t-j, i7-4700MQ, GeForce 740M 2GB DDR3, 17.3" Full HD 1920x1080, 16GB RAM, Samsung 840 Pro 128GB, 1TB Hitachi 7200 HDD,
Desktop: eSATA ports,
External eSATA Seagate 500GB SATA2 7200rpm,
External WD USB 500GB
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