What am i missing....

Alright, i know there are a couple of these floating around and i have read a couple.
My computer that i built like 2months ago is randomly crashing. I willbe doing anything from surfing the web, playing video games, or not doing anything at all and it will basically reboot itself. It goes straight to a black screen for like 1-2sec and then it loads back up.

At first i thought it was my Antec Smart Power 350W power supply. I was upgrading my video card already so i tacked on a Thermaltake purepower 420W.

I added the new power supply and booted up, it has now died like 4-5times. The rails are as followed...


I have a chaintech VNF3-250 board, A64 2800+, 512 PC3200 Kingston RAM, 1HDD, 1optical drive, a shittty video card (haven't added the new one yet, that is supposed to be delivered today) 2 120mm fans, 1PCI modem, and the only thing i have for USB is an external HDD.

So i am somewhat sure that its not power supply related. I am almost garenteed that its not heat because my system runs really cool. my PCU is 30idle and never above 58 under load.
So if its not temp, and power....what else could it be?

EDIT: Minor mistakes


I lost.....again. Atleast it was close....135-70.<P ID="edit"><FONT SIZE=-1><EM>Edited by pickxx on 11/19/04 10:43 AM.</EM></FONT></P>
5 answers Last reply
More about what missing
  1. Run Memtest86 to check your ram.

    Run the DX diag to see if you got the vid drivers in right

    Mobile XP 2600+ (11X200)
    Abit NF7-S v 2.0
    Maxtor 60GB ATA 133 7200RPM
    512MB Corsair Twinx 3200LL
    BBA 9800 Pro
    Enermax Noisetaker 420 watts
    Win2K sp4
  2. Sounds like you have bad memory. Relax timings and try again.

    oh, its a nice day. TO EAT CHILDREN!!!
  3. Put the ram in the slot closest to the cpu. Over volt the ram by 1 to 2 tenths v. Check the hs on the bridge, it may not be attached properly.
    Set MBM5 up to keep logs, and run memtest.
  4. Does you 5V Rail ever dip below 5V. Mine dips to 4.99 occasionally. Our 12V Rails are about the same. I have the thermaltake 480, and I have been having some issues that seem to point toward the PSU.
  5. Its alredy in the closest one to the CPU, i have checked my Heatsink to make sure its sitting tight and clamped tight.

    MBM5 doesn't support my board, it supports the Znf3, but not the Vnf3.
    Also i dont have a floppy drive to run memtest from.


    I lost.....again. Atleast it was close....135-70.
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