Serious memtest86 error!

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Regarding the second screen, yep that's typically from using an older version of Memtest on a newer MOBO/CPU; use Memtest86+ V4.20 - http://www.memtest.org/#downiso

Q - What CPU?
Q - What exact RAM? ; please provide a link(s) to each kit
Q - What MOBO? (Motherboard)

I downloaded that memtest86 from their main site, would've guessed they had the newest, well well.

CPU: Intel i5-3570k
a
RAM: Corsair Vengeance 1600 (2*4gb): http://www.corsair.com/en/memory-by-product-family/veng...

MOBO: p8z77-v from Asus

CML8GX3M2A1600C9 DDR3-1600 9-9-9-24-2N @ 1.50v

Yeah, well that's the old site and old version. You still are having errors but the screen output will be 'fixed' with the newer version.

On the Intel i5-3570K and ASUS P8Z77-V use at least BIOS 1015 and if needed update only via ASUS EZ Flash 2 from the BIOS.

1. The kit needs to be installed into the 'Blue' DIMM slots ; CPU: | blank | 4GB | blank | 4GB |
2. Speaking of the BIOS, for now:
F5 ; Load Optimized Defaults
AI Overclock Tuner -> XMP with Profile 1
-
VCCSA Voltage -> Manual ; IF any Errors from Memtest
VCCSA Voltage -> 1.20v ; IF any Errors from Memtest
-
F10 ; Save and Exit = YES
3. Create a new bootable copy of Memtest86+ and run Memtest86+ V4.20 for 4-passes and stop if any errors are detected, there's no point in continuing.

Additional tests:
CPU: | blank | 4GB | blank | blank |
A. Test with (1) stick at a time, if Memtest86+ finds an error then test the next stick.
B. Update the BIOS using ASUS EZ Flash 2 from the BIOS; see - http://www.tomshardware.com/forum/289507-30-what-flash

IF (1) stick is 'good' and the other is bad then contact either the reseller or Corsair and request a 'Cross-Ship' RMA if possible to reduce downtime IF you cannot live with 4GB of RAM for a week or two.

Thanks for the long and informative replay. I have done as you said now, and I'm in memtest86 (4.2) and waiting. As of now I'm halfway in 1st pass with no errors.

Could it be the Asus performance thing that was the cause. It overclocked my cpu to 4.1 Ghz, and my ram to 14## (don't remember)

Btw, I have the newest BIOS (1215)

Don't OC the BCLK, use the CPU Multiplier only! So leave the BCLK = 100MHz and use the CPU Multiplier on any SB/IB K CPU.

Adjusting the BCLK on any LGA 1155 corrupts the PCIe & SATA which are all connected. In order to get some oddball "ram to 14##" value you must have adjusted the BCLK which is the only way I can imagine that number.

I got no errors after this. It was the OC. I used the UEFI performance thing, which I though would be safe, but I guess not. Thank you anyway, I hope my computer isn't damaged for ever?

Damaged no, my only concern would be data corruption on your drives.

If it were 'me' schedule both options below and restart, keep in mind ~45 minutes per TB of storage. You can start SFC before you go to bed and run during the night.

I did as you said. I'm pretty sure everything is ok, luckily. Thank you for all your help, I was very close to send my RAM back, and I was thinking of doing the same with my motherboard, so you saved my there.

Thanks again

Thanks, Cool and Good Luck!