Random lockups/bsod's

[Potzo]

Hey, Ive started having problems again

BSOD's or random lockups randomly (happens if I go play a game)
1. way: when it freezes in the game, sound also freezes, my usb keyboard and mouse looses power.
2. way: random lockup on being idle (keyboard and mouses looses power and I have to restart)

Check my full specs here: http://www.xfire.com/profile/321tomo123/
Heres quick summary:
Gigabyte EX58-DS4, Corsair TX 650W, Intel i7 920, 6x2gb OC Z DDR3, Gigabyte GTX 570 SO

Recently I bought new GPU, the old one gave me lockups as well (but it was dieng anyway), I've had HD 4870 x2, which drawed alot of power..

And I noticed (way back) that case metal parts have wierd continuous static electricity (its annoying me pretty much..)  

I've also had RAM replaced back then, like 2 years ago..
And also one of the HDD had bad blocks, so I bought new one month before GPU...

It was like 2 weeks since I got the gpu, it was all ok untill yesterday
Also when I got out of BF3 for a sec, I checked task manager, and saw that it shows only 4GB O.o..
So again, it could be RAM..
But, I am thinking PSU or MB have isues as well...

My worst nightmare is back
Please help me out guys..

[teknology9]

Greetings and a warm welcome to the forum.

So again, it could be RAM..

You have mentioned it could be the RAM, have you tested it lately with Memtest?

http://www.memtest.org/

You will need to scroll  down until you see Auto Installer for USB Key, you can then install the file onto a pendrive one of say 2Gb.

Put 1 stick of RAM in slot 1

Put the pendrive into one of the headers at the rear of your MB

Ensure everything is seated correctly before powering on.....safety first

If so power on and keep pressing F12 until a menu appears and select your pendrive and let the testing begin.

Allow for 10 cycles / passess.

OR

If you have some known good compatible memory you could use that, but the above would be thorough.

Hope this helps

Teknology9
                              

[spurst]

i was having random freezes - I had to disable the XMP setting for my memory in the bios. Also, if you're overclocked at all - you probably have the memory tweaked too high / too aggressive.

[Potzo]

Thanks, I will try disabling this in BIOS first, if it wont work I will try memtest
Because when I was installing new GPU I did reset my BIOS actually
So maybe it doesnt like the default settings, and maybe I did change back then something when I received replaced RAM, cant remember..

Thanks teknology9 and spurst, I will reply with results