motherboard shutting system down

Hello,

Need some assistance, please! My motherboard, a DFI CW35-L will shut off a few seconds (sometimes 5, sometimes 15) after I turn it on - but it seems to always be within 10/15 seconds or so. There are no system errors - all memory checks, etc report zero problems...the system gets to start booting my system - which is Windows 2000 professional. BIOS recognized all PCI cards in the system. I tried booting from the floppy in case there was a problem with my OS Win2k but I had the same problems - it even shut off while in the BIOS settings screen. I've had the system 1 year and a few months and this is the first time that this is happening. Now - after the system shuts itself down, both the DIMM Standby Power LED and the PCI Standby Power LED are blinking at 1-second intervals. When I turn the system back on - both LEDs are steady and NOT blinking -until the system turns itself off again. I did notice a few weeks ago (approx. the same time I added a DSL router to my system-although this should absolutely not be related), that upon system boot (as soon as I am available to see the clock in Win2k) my clock is behind. Sometimes 15 minutes, sometimes 1 and a half hours or so. Two nights ago - it took 5 or 6 attempts to get the system on but it eventually booted and stayed on and worked perfectly through the night. When I went to turn the system on last night - I tried 10 times or so and it simply will not boot and stay on. Approximately the same time when I began noticing the clock problem - I noticed that sometimes to turn the system on I had to push the power button on my PC (a SystemMax bought from Global Computer May of 2000) twice (of course, as opposed to once). I have made zero hardware or software changes in over a year and I have a surge protector protecting all lines coming into my computer (power, modem, ethernet etc).

Thanks for any and all help!
Dinos

Thank you, Steve. Solution 1 (safe mode) I know will not produce any results. I will get a new system battery - Question - is this the ONLY way that my system clock could be behind???

If that doesn't work, I'll try the power supply - although I haven't added any PCI boards unless the power supply is starting (but hasn't completely) to fail. Also, been doing some reading and another users somewhere else suggested that since my motherboard has "health monitoring", it could be shutting the system down because of a bad fan or something along those lines.

Your thoughts now? Thanks again, Steve.

-Dinos

Check that the "shutdown temperature" in the health monitoring isn't set too low.

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