What make/model PSU? If it cost less than $50 it will be cr*p. Check all the pins in the power plug to the motherboard are fully engaged. If you give vigorous wiggle and pull on lead to motherboard power connector it shold NOT come loose. If it does, was not correctly engaged. Are PCI-e power connector(s) fitted to graphics card? Disable 'Restart on error' in XP. Check Event Viewer for errors!
my pwoer supply is ,
zebronics platinum series, zeb 500w 24 pin.
It did get spoilt the first month i bought it,..
and instead of replacing , the dealer repaired it and gave it back,
but i always had a little problem since then,
and on installing the new stuff,
1. first the comp did not come on, after shaking the 24 pins ( which were locked properly), it did come on...
BUT the CPU FAN would start after 7 seconds, but it does, BUT what i have noticed it, it stutters before starting, sometimes rotates very slowly, but eventually gets going ..
connectors on graphic cards r connected..
have no clue.
Even if i switch it on and then i go through the normal shut down, instead of staying off... It goes off but come back on a second later on its own..
I looked around alittle bit to find the specs on your psu. Now, Im not slamming your psu, but on the webite at zebronics, it didnt even give the specs on the psu. Thats not good, tho I did find a lil snippet here http://www.techtree.com/techtree/jsp/forum/printtopic.j... It seems it goes around 17 amps per rail, which is way weak for that gpu and 2 HDDs. You should get something that gives at least 30 amps COMBINED to the 12 volt rail, and I dont mean max, like 17 = 17 = 34. 17amps, thats max per rail, not max for all rails