BSOD randomly windows 7 64

[darthrob81]

Have been getting random BSOD, mostly when i leave my comp on overnight to download steam games. But have gotten while just surfing the net. Attatched dump info, cpuz, and RAMMON.

 

[x BlueRobot]

[COLOR="Red"]BugCheck 1A[/COLOR], {41790, fffffa800615d7a0, ffff, 0}

Probably caused by : ntkrnlmp.exe ( nt! ?? ::FNODOBFM::`string'+35054 )

Usual causes:  Device driver, memory, kernel

Remove:

Start Menu\Programs\ASUS\AI Suite II
Start Menu\Programs\ASUS

These are usually bloatware, which can slow down and corrupt your system.

What AV program are you using? I couldn't see any installed, here are some recommendations, due to stability and low resource consumption:

Install and perform full scans with:

• Malwarebytes : Free anti-malware download
• Microsoft Security Essentials | Protect against viruses, spyware, and other malware

:info: Remember to install the free version of Malwarebytes not the free trail; untick the free trial box during installation. MSE is the most lightweight and compatible with the Windows 7 operating system.

You can also view this thread for a complete free and lightweight security protection combination:

• http://www.sevenforums.com/system-security/206705-good-free-system-security-combination.html

Memory:

• http://www.sevenforums.com/tutorials/105647-ram-test-memtest86.html

Run Memtest86+ for least 9-10 passes, and preferably overnight as it can take a while to fully complete.

Test each RAM stick individually, if an error is found then move the same RAM stick into the next DIMM slot and test again, if errors are found for the same RAM stick in every available slot then you have a faulty RAM module. On the other hand, if no errors are found in the next slot or the other slots for the same RAM module, then you have a faulty DIMM slot.

Test each RAM stick and every motherboard DIMM slot available.

 

[darthrob81]

I did the memtest and when I use all 4 sticks it passed two times, failed once, and then 3 times failed with a ton of errors, finally freezing on test 8. With single sticks passed a couple of tests, and putting two in each slot seperately passed. Why would there be an issue with memtest only when all 4 sticks are in?

 

[x BlueRobot]

When you started testing separately, did they fail within a particular slot?

Post a screenshot of each window from CPU-z, and including the SPD tab for each DIMM slot:

• CPUID - System & hardware benchmark, monitoring, reporting
• http://www.sevenforums.com/tutorials/9733-screenshots-files-upload-post-seven-forums.html

 

[darthrob81]

Did not fail one at a time in any slot. No failings whatsoever. Only fail was with 4 sticks in.

 

[x BlueRobot]

Are you using different RAM modules? They seem to be running at different clock speeds too, which may cause some problems.

RAM modules are usually installed in certain slots, and in matched sets or pairs.

 

[essenbe]

If you are overclocking, go to bios and set everything to optimized defaults. In the SPD tab, it shows 1 dimm slot at a time. can we see all 4 SPD tabs please. Did you buy this ram as a set or are they different modules? When you set your bios to defaults, put the tweaking section to manual, manually set the timings on the ram sticks and manually set the dram voltage. Set the boot order, sata mode and save and exit.

 

[Britton30]

I did the memtest and when I use all 4 sticks it passed two times, failed once, and then 3 times failed with a ton of errors, finally freezing on test 8. With single sticks passed a couple of tests, and putting two in each slot seperately passed. Why would there be an issue with memtest only when all 4 sticks are in?

You will have to let each stick run 7 full passes in each slot. It will take some time but should point which stick is bad.

 

[darthrob81]

The sticks are a set 4x4gb corsair vengeance. Sorry didn't realize there was a different page for each slot. Including that corrected. Am a noob at this to be sure. Nothing should be overclocked unless it does it standard on the board. Unfortunetally I am a noob at bios as wel. Going to look into setting it all manually.

 

[Britton30]

This is the preferred, best way to upload an image to a post.
http://www.sevenforums.com/tutorials/9733-screenshots-files-upload-post-seven-forums.html#post93869

 

[darthrob81]

View attachment 254722

 

[Britton30]

Thanks, much better and readable. It confirms you have matched RAM modules. Was it a 4 stick matched set? Also please do memtest with 7 passes per slot/stick. With errors with 4 installed it points ot something being bad, RAM, or slot/board.

EDIT: Never mind, the part number shows it is a 16GB set.

 

[darthrob81]

Yes its a matched set. Will start doing the testing asap.

 

[essenbe]

Again, here is the tutorial http://www.sevenforums.com/tutorials/105647-ram-test-memtest86.html It will tell yiu exactly what to do. But, you already have found errors. What you are trying to determine is if you have a bad ram stick, or if one of the dimm slots is bad. Unfortunately, it takes at least 7 passes to completely test a stick of ram. trust me, we've all been there. So, you have to run each stick for 7 passes in every slot. If you get an error, you can stop the test. Even 1 error is a fail.

 

[Dave76]

After finishing the RAM tests.
Sometimes with 4 RAM cards or more that 8GB RAM you will need to bump the IMC (Integrated Memory Controller) for your motherboard VCCSA Voltage, and maybe the DRAM voltage.
Go to your BIOS > AI Tweaker >
Find the voltage for DRAM and VCCSA, post here.

This may be the cause of the memtest86+ errors.

 

[darthrob81]

So I did the testing through yesterday and most of today. The first slot failed two sticks in a row. Then i put the next to in the next two slots with a pass on both. Then used one of the ones that failed the first slot in the last and that also passed. So it seems that the first slot is having an issue. Should I still try and change memory settings or should i just count the first slot as useless and use the other ones only?

 

[essenbe]

Your memory settings should be what is written on the stick. Read post # 15 and tell us what the dram voltage and VCCSA voltage is in bios.

 

[darthrob81]

Ram is 1600 9-9-9-24 1.50v Seems to check out
DRAM voltage in bios 1.50
VCCSA voltage .925

 

[Dave76]

If two RAM cards failed in slot #1 and then passed in other slots, you have a faulty slot.
Changing the voltages won't help.
You can try cleaning the problem slot with iso alcohol and a qtip, and re-running the tests.
Depending on the information in your motherboard manual, you might be able to put your RAM cards in other slots. Some motherboards require the RAM to be in specific slots, others are more flexible.

 

[darthrob81]

Well I actually tried putting just 2 sticks of ram in. The two slots were the one recommended by the manual. But when I came back after a little bit it had blue screened, windows didn't even recover from it this time and when i restarted it failed to load a couple of times and then blue screened again when it started to boot back up. Then like the fourth time trying it came on. Mobo bad altogether?