My computer started failing to boot about a month ago. It would start the cpu and disk drives and even the fan on the video card but the monitor would not register a signal. After many hours of eliminating hardware from the equation I determined that it must be the power supply. When everything was unplugged except the video card and ram the current power supply still failed to post. I then switched it with another older psu (250w) and it booted up just fine. So I decided it must be time for a new psu. I got the new one (450w A-Power) and it failed to boot again. Still the old 250 booted just fine when switched between the two. I even put my video card in another machine with the new psu and it wouldn’t boot on that one either. So I figured there is either a compatibility issue between my video card (Radeon 9600xt) and the psu or that the psu is just bad or not powerful enough. I have since gone through 3 more psu’s and nothing will boot my computer except the old 250w. I find it hard to believe that 3 psu’s could all be bad or incompatible. Is there something else I should be trying or could there be another cause. My computer info is listed below. Please help a new poster.
mobo=k7vta3 8.0
cpu=amd 2000+
vpu=saphire radeon 9600xt
ram=512mb pc2700 ddr
sound=soundblaster audigy 2 platinum
hdd=wd 80gb 7200
floppy drive
dvd rom
cdr/rw drive
Thanks