Dead Computer, whats the cause?

By Blitzkev ยท 7 replies
Sep 17, 2007
  1. This is a very long story, but after hours of trying to fix and
    searching forums, I've decided to ask you guys so please try and
    help ;)

    1 year ago I built my own computer, worked fine until about this
    august, it started to freeze randomly and crash, I figured it was my
    processor overheating since speedfan showed it running really hot. I
    cleared out a bunch of dust and decided to buy a new heatsink and PSU
    fan, and a new case. While I was at it I bought a new video card
    because mine was outdated. The video card and case arrived, and I
    began to transplant my mobo to the new case. Everything seemed to be
    going well, I did lose one insulator washer, so I didn't screw one
    screw into the motherboard just to be safe. The first power up didn't
    do anything, but I soon found the problem and fixed it, and it booted
    up like normal. After about 2-3 minutes of starting vista, while it
    was searching for a new driver to the new 8600 GTS, the computer shut
    itself down, after turning the screen white. The only thing left was
    my mobo led, lit up green. So I turned the PSU off and then back on,
    and this time the computer froze while it was loading the bios and
    shut itself off again. I was afraid I might have installed the
    heatsink on the CPU incorrectly, but I wanted to make sure, and waited
    for everything to cool down and turned the PSU on once again. This
    time I made it all the way into vista and turned on speedfan to check
    the temperatures, it was reading 20 C and 34 C on my two CPU cores
    (Pentium D 2.8ghz) but my video card was running at 70 C. I thought
    maybe that was causing the system to shut down (made sense with the
    screen freezing) and I looked online for answers. I found some sites
    that told me to download the newest vista driver, and I managed to
    download and install that driver while the system was still shutting
    itself off intermittently. After I got the driver installed it seemed
    to be working normally, it was going for about 25 minutes without
    shutting off, and many tests were showing everything working
    correctly. I tried listening to some music but found there was no
    sound coming out of the speakers (I use my onboard sound)or my
    headphone jack on my case, so I installed a new driver for the onboard
    sound. When I restarted my computer, it blue screened loading vista
    (IRQL_NOT_LESS_THEN_OR_EQUAL error) and then the next time I tried
    starting my computer, everything spun like normal, all fans worked, HD
    was spinning, GPU fan was spinning, DVD tray opened and closed, and
    the MoBo light was green, but nothing showed up on the screen. My
    motherboard wasn't even going through post anymore. I tried my old
    video card in both slots, I tried different hard drives, and switching
    my ram into the other two slots, I cleared my RTC ram cache, and
    nothing could get the bios to show up on my monitor. I went to sleep
    after working on it for many hours. This morning the condition hadn't
    improved, so I removed my battery and then replaced it. The next time
    I powered on my PSU nothing seemed to work, no fans spin at all, HD
    doesn't spin when connected. The only thing that has life is my
    Motherboards green LED.

    I'm not sure what could have caused all this, but I think it's between
    the motherboard and PSU. Possibly the CPU.

    Thanks in advance.

    Overview - Fans Don't Spin, Only sign of life is green LED on mobo, nothing shows up on screen (no post).
  2. Jase123

    Jase123 Banned Posts: 1,012

    thats the only thing i had on my mobo a green led light.... So i got a replacemen t mobo...... I don't think its the PSU, because it seems that power is getting to the motherboard. Is there any way you could try another cpu?... To rule that possibility out.... But i am positive this is the motherboard as power is getting to the motherboard but the motherboard aint sending power to other parts (e.g Fans)

    Regards Jase
  3. Blitzkev

    Blitzkev TS Rookie Topic Starter

    My Motherboard is still under warranty, it's an asus, I'm going to see if I can RMA it back to them.
  4. Jase123

    Jase123 Banned Posts: 1,012

    yes that would be a good idea.

    Let me know if that solves your problem.

    Regards Jase
  5. Blitzkev

    Blitzkev TS Rookie Topic Starter

    I tested my Ram, PSU and graphics cards in another mobo and all are functional. So it's down to the CPU and the mobo.
  6. Jase123

    Jase123 Banned Posts: 1,012

    I am 98% sure this is the motherboard.

    Because if it was the cpu, then the fans would still spin.

    I would get a replacement motherboard.

    Regards Jase
  7. Tedster

    Tedster Techspot old timer..... Posts: 6,002   +15

    could be something simple like a CMOS battery.
  8. Jase123

    Jase123 Banned Posts: 1,012

    Yes Tedster is quite right. there is a chance it could be the cmos. Take the cmos battery out for 20mins or so and then put it back in. and try to boot.

    Regards Jase
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