Powerspec 8350
Power Supply - changed 2+ years ago to Arrow 500w max
Video Card - Radeon 9550 AGP 256mb
1 Gig ram - 2x512s
PCI Modem
PCI ethernet card - one onboard didnt work right when i bought machine
Samsung writemaster DVD rom - now unhooked
Samsung 52x cdrom
I have recently had a lot of issues with this machine -
Worked fine then one day ...
Didnt recognize hard drive at all
No HDD in bios or anywhere
after leaving for a while and turning back on - all was fine - for a few days...
then same problem
tried new HDD - would recognize - but wouldnt boot up cuz of OS...
Ran diagnostics on old HDD and determined it was bad.
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Next had problem where computer would turn on (cpu and psu fans running) but nothing on screen - just black. No beeps, no drives spinning, just black.
This is what happens now when I shut down - xp shuts down correctly and drives stop spinning, but cpu and psu fans keep running. Green light on front of machine stays on.
After removing cmos battery and putting it back - it would boot once - to tell me that the OS wasnt right (hard drive was from different machine - needed to reinstall xp.)
Began installing xp - couldnt use restore cd's from machine - i guess it thought it wasnt the right machine since bios had changed? and HDD and video card and memory i have are different than was original. So I used a different oem xp cd with codes from this computer which are on the sticker on side of case.
Tried repartitioning and formatting drive with xp cd - would go thru process of formatting to 100% then say that it couldnt reformat drive - possible drive error problem...
Ran multiple diagnostics on this drive which all were good.
Bought a new cmos battery and all seemed better now. Would reboot without having to take battery out each time. Formatted Drive - no problems...
Began copying files and then - Error copying a certain file... skip - retry - abort...
Tried again - same problem.
Switched from DVD burner to 52x CDrom Drive - unhooked DVD drive. Everything ran good - copied all files... Installation Complete...
Downloaded Windows Updates... Installed Updated Drivers... All Is Going Good...
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But when I shut down - green light and fans are still running. I can push power button on front of machine at which point it starts back up. Only way to turn off completely is by Switch on PSU in back.
So - is this something that could be caused by a bad Power Supply? or a setting in the BIOS which was maybe lost due to the cmos battery going bad?
I dont have any xtra Power Supplies laying around big enough to do any good so will have to buy new one - if that is the most likely cause.
Thanks for any help - or ideas.