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Computer Shuts down - weird pattern on screen

Hello, i got a problem with my 3 year oldcomputer:
It's shuts down randomly, when happens the lights on the inside are still on and sometimes the fans keeps runing.

this happened a couple of times and i started to check various fixes:
>restart the BIOS
>updated the BIOS
>checked the RAM
>try a couple of tests on the Hard Drive
>re installed drivers
>i did a temp test on the CPU, no problems.

but the problem persisted.
and one day the computer died, no image, no loading, nothing.
i decided to change the MotherBoard
and the computer came back to work
i thought that i was done.

but noooooo
a couple of days ago it started to shut down again
i formated my HDD, re installed windows

today the computer crashed and a weird pattern appreared in the screen:

this can be a good clue of what is happening?
i don't play videogames and the shut down happens when i'm just browsing the web or working.

my computer:
Operating System: Windows 7 Ultimate 64-bit
CPU: AMD Athlon II X4 640
RAM: 8,00GB Dual-Channel DDR3 @ 669MHz (9-9-9-24)
Motherboard: ASUSTeK Computer INC. M5A78L-M/USB3 (AM3R2)
Graphics: ATI AMD 760G
Hard Drives
932GB Seagate ST31000528AS (SATA)
466GB Seagate ST3500418AS ATA Device (SATA)
and a external USB3 HDD
550W Thermaltake PSU

-thanks for your time
7 answers Last reply Best Answer
More about computer shuts weird pattern screen
  1. Since you use integrated graphics I would guess it is a RAM issue. You should run memtestx86 from memtest.org to test it.
  2. wanderer11 said:
    Since you use integrated graphics I would guess it is a RAM issue. You should run memtestx86 from memtest.org to test it.


    thanks wanderer11,
    i did one pass on memtestx86 now. No error found.
    what other causes can be? PSU? CPU? i feel really clueless now

    anyways i think i'll keep memtest runing tonight.
  3. Do more than one pass. Do three or 4. I really think it's the RAM. If not it is your gpu which, I think, is integrated in your motherboard. PSU failures generally result in your computer just turning off or restaring. CPU issues would generally result in a BSOD or a shutdown if it was overheating then not being able to start up until it cools down.
  4. Best answer
    It's RAM or IGPU.
    Can you get a hold of a dedicated graphics card?
  5. thanks guys,
    i'll try to get another RAM to replace mine and see what happens, and maybe a video card too.

    yup video is integrated.

    i'll do more pases in memtest and i'll update.
  6. quick update: 4 pass on memtestx86, 0 errors
    i'll try another ram soon as i can
  7. The Last Update (i hope)

    tried another RAM: the issue persisted

    a friend lend me an Nvidia Graphic Card: Problem Solved!
    the weird thing that i changed MoBos with integrated graphics and didn't work, a dedicated one solved the issue.
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