Random BSOD, freezes and artifacts

By Nineven
Sep 2, 2011
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  1. Random BSODs, freezes and artifacts


    I have random BSODs (mostly while gaming, but not exclusively), freezes (always while doing stuff on Windows desktop or while navigating the Internet. Everything gets stuck and I have to manually press the reset button) and artifacts (always at the bottom of the screen, on Windows desktop. It looks like shifted squares, hard to explain. I have to minimize and maximize a window to make it disappear).

    It has been like this for months now. Sometimes I can get up to five BSODs a day and sometimes I get none for four or five days in a row.

    I don't really remember when it started. I think I have artifacts since long ago, but only when I use the latest Nvidia driver, not with an old one.

    Now I will make a list of what I have already done to try to find the problem:

    • I updated all drivers I could (BIOS firmware already up to date)
    • I cleaned my computer including fans and slots (RAM, video card, etc)
    • I checked for overheating
    • I tested the RAM with Memtest86+ two entire nights
    • I bought new different RAM sticks and tested them with Memtest86+ an entire night
    • I manually set the RAM timing and voltage in the BIOS
    • I tested one stick of RAM in each of the motherboard's slots, and then the same with the other stick
    • I bought a new PSU and checked all voltages while the computer was idle and on heavy load
    • I unplugged all USB devices except the mouse and the keyboard
    • chkdsk /f /r
    • I disabled the pagefile
    • sfc /scannow
    • I reinstalled Windows on another hard drive

    Here are my computer's specs:

    • CPU: Intel Core 2 Quad Q8400
    • Motherboard: Asus P5QD Turbo
    • RAM: Corsair (XMS2) DDR2 800 MHz/PC2-6400 (2 sticks of 2 GB each)
    • GPU: NVIDIA GeForce GTS 250 (Asus)
    • PSU: OCZ ModXStream Pro 600W
    • OS: Windows 7 Ultimate 64 bit

    I changed the RAM (I now have the one specified in my computer's specs) because I found out something strange with my two old sticks:

    The computer does boot with one of the stick whatever the slot I put it in.
    The computer does not boot (well it kind of start, but the motherboard don't even beep, and it stay like that, with black screen) when I put the other stick in the slot 3 or 4 of my motherboard (but the computer start normally when that same stick is in slot 1 or 2).

    I'm not sure if this is normal.

    I do not overclock my computer.

    The windows event viewer does not show errors apart from those related with the BSODs ("The previous system shutdown at xx:xx:xx on ‎xx/‎xx/‎xxxx was unexpected.).

    I have been keeping some of the minidumps files from the BSODs I got.

    I have been trying to get useful information from them with the Microsoft Debugging Tools but I really don't know what to understand from them, so here they are.

    I'm really desperate.

    Thanks in advance for your help. :)


    EDIT: Problem solved. Defective graphic card (video ram).

    Attached Files:

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