Windows 7 keeps losing my RAM

When it's down to 4 or 8GB, what does resmon show for the memory tab? Might be worth posting a screenshot of it at 16GB, and then a comparative one at 4 or 8GB. This really does smell like a BIOS issue, unfortuantely.
 

My Computer My Computer

At a glance

Windows 10 Pro x64Intel Core i7 4790K @ 4.5GHz32GB DDR3Nvidia GeForce GTX970
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Custom
OS
Windows 10 Pro x64
CPU
Intel Core i7 4790K @ 4.5GHz
Motherboard
Asus Maximus Hero VII
Memory
32GB DDR3
Graphics Card(s)
Nvidia GeForce GTX970
Sound Card
Realtek HD Audio
Screen Resolution
1920x1200
Hard Drives
1x Samsung 250GB SSD
4x WD RE 2TB (RAIDZ)
PSU
Corsair AX760i
Case
Fractal Design Define R4
Cooling
Noctua NH-D15
It's only showing 8, and right now that's what the Windows is showing.
 

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My Computer My Computer

At a glance

Windows XP to Windows 7Intel Core 2 Quad 2.834x2 OCZ PlatinumNvidia GForce 8500 GT
Computer Manufacturer/Model Number
Home Built-Frankenstein
OS
Windows XP to Windows 7
CPU
Intel Core 2 Quad 2.83
Motherboard
P5Q ASUS
Memory
4x2 OCZ Platinum
Graphics Card(s)
Nvidia GForce 8500 GT
Sound Card
Internal Realtek
Monitor(s) Displays
Dell
Hard Drives
3 Maxtor 500G
1 HD Caviar Green WD7500AADS
1 Seagate 500 G
1 Seagate TB
Keyboard
MS Ergo
Mouse
WACOM-3 Tablets-Intuos 4, Graphire 4, Graphire 3 to surf
Internet Speed
Whatever Comcast High Speed is doing at the moment
I tried putting the ram up to 1600 and it locked up. It didn't want to boot like that. I shut the machine down and let it sit for a few minutes---then I started it again and got a screen that said: "Overclocking FAILED! Would you like to reload defaults and try again?" So I did that and left the ram alone after that. I think the only thing MORE annoying than my ram flitting in and out like a schizophrenic fairy is for the computer not to boot at all....

that error message is normal on an ASUS board when the machine doesnt boot up properly or more accurately, when the boot sequence is interrupted.
for a core i7, your minimum memory speed (should your board support it, which it does) is ddr3-1600.

No warranty---I built this machine myself. Ordered the parts off the internet and started building what "I" wanted and needed. I couldn't find a machine that I could afford with the stuff that I needed for work...So for this machine to be down long enough to replace everything, it's gonna choke me at far as work goes. I got the power supply from one place, the ram from Circuit City and the mobo from New Egg. Which means dealing with a ton of paperwork and massive down time...
I think I'm gonna start with bugging the OCZ people. Seriously? I spent close to 700.00 on RAM. I think maybe their IT people need to do some work for that kind of money...

Laura


at this point, my suggestion would be to, as in what i would do if i were confronted with the same...

1. change the ram and drop the size. make it 12 gigs triple channel - ie, 2 kits of 6 gb each (for a total of 6 sticks) as 24 gigs is just too expensive right now - return the rest. see if that gets you anywhere.

2. even after that, if you have issues, change the power supply.

3. even after that, if there are still issues, return the board and get a new one.

4. and even after that, if it's still flaky, take the pc to a local computer shop and have them diagnose it (since by this time, you've changed the ram, ps and the board)

sure, there's a fair amount of downtime, but i cant think of any other way.
you could reduce some of the time by doing that cross-shipping thing, where they ship you the replacement part and then only do you send the old part back.

last thought, do you have this connected to a ups by any chance? if so, what kind of ups? (could the older ups tech screw up a modern power supply's PFC or am i full of crap?)
 

My Computer My Computer

At a glance

Windows 7 Ultimate x64Core i7 960Corsair XMS3 DDR3-1600 - 12 GBeVGA GTX 275 1792 MB
OS
Windows 7 Ultimate x64
CPU
Core i7 960
Motherboard
ASUS P6TD Deluxe
Memory
Corsair XMS3 DDR3-1600 - 12 GB
Graphics Card(s)
eVGA GTX 275 1792 MB
Sound Card
Onboard HD etc
Monitor(s) Displays
Dell SP2208WFP
Hard Drives
Western Digital Caviar Black 1 TB x 2 (RAID-1)
PSU
BFG EX-1200
Case
CoolerMaster HAF 922
Cooling
Thermalright Ultra 120 Extreme with Noctua NH-12 Fan
Keyboard
MS Natural (you know, like the ones you find in nature...)
Mouse
MS Intellimouse Explorer
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