hi everybody, i have a dell dimension 4500 with a 350w psu, and a 512mb stick of ram running windows xp home edition with a 256mb ati radeon hd 2400 pro video card. just tonight, i was browsing the web when suddenly the cd drive tried to read the cd in it and the screen said it had no input signal. i turned off the machine and turned it back on again, and this time, as i was browsing the web again, the pc shut off and turned back on. there are no viruses, so why did it do this? im afraid it might do it again, how can i fix it? im not sure, but it may be the psu. ever since i got it, it has made a high pitched whine, im not sure this is normal for a antec 350w psu. i have had no previous problems with this psu, so how come the pc did this? can someone please help?
