New build spontaneous reboot

By dbarry
Feb 2, 2005
  1. I hope there is someone here with the patience to help a newby with his first computer build project. I really have two issues which may or may not be related. Here are my specs:

    Gigabyte GA-K8NS Ultra-939 motherboard
    nForce3 Ultra chipset
    AMD Athlon 64 3000+, 512KB L2 Cache, Socket 939 64-bit Processor
    (2) 512MB PC3200 184pin DDR DIMM Memory Modules (dual channel)
    Hitachi 250GB, 7200RPM, Internal SATA/150 Hard Drive
    Verto GeForce FX 5500 Video Card, 8x AGP, 128MB DDR
    NEC 16X Double Layer DVD±RW Drive, Model ND-3520A BK
    Mad Dog Multimedia SurePower 600W BTX/ATX Smart Cable Power Supply
    Antec Super Lanboy case

    The more significant problem is that the computer will spontaneously restart every few hours or so. It usually happens when opening a new application or website (via DSL) but sometimes will just happen when the machine is sitting idle. I first thought it must be a CPU heat issue but the Gigabyte utility shows it running between 29 and 32 degrees celsius. I did use thermal paste in a thin layer between the CPU and stock cooling fan. When it shuts down I get a very brief flash of what looks like a BSOD but there's not enough time to read it. I am running Windows XP Pro, SP2 and Norton antivirus. I have heard there is a way to turn off the auto restart feature so at least I could get a look at the BSOD, but I'm not sure how to do it.

    One other piece of info may be helpful. When I look in the Gigabyte utility, it shows me two warning fans signals for system and power fans. The motherboard has the capability to control these fans I think. I didn't have any three pin connector wires so I just hooked the case fans directly to a four-pin molex connector, which seems to work fine but the speeds aren't controlled. Could this be confusing the motherboard?

    The other problem really has me stumped. When I use the CD/DVD to load a program or something, it reads the first fine. Then when I remove that CD and put in the next one, the computer still sees the one that has been removed. Is there a Windows setting or something that controls whether the optical drive clears its cache? Is the optical drive just bad? Could this be related to the rebooting issue?

    I loved the experience of building my own. If only I can get past these last two "minor" issues I will be in love with my new baby. Thanks in advance to anyone who might be able to shed some light on these issues.
  2. zephead

    zephead TechSpot Paladin Posts: 1,569

    some basic things bound to fix your problem:
    update the bios, device drivers, and software. use a memory tester utility to test your ram.

    to turn off auto restart:
    press window key and pause/break at the same time and go to advanced>startup and recovery. uncheck 'automatically restart' and apply your settings.

    you may also have to root through the bios and change some settings. if you have an option for CPC override, disable it.
  3. Wotrop

    Wotrop TS Rookie Posts: 72


    I have the same problem :dead:
  4. zephead

    zephead TechSpot Paladin Posts: 1,569

    these problems are caused by memory in the vast majority of cases.
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