I have an HP Compaq d330T desktop computer. I had trouble with the
computer powering itself off after about a minute. In the past I had
trouble with the CPU fan getting full of dust and loud, so once again
I removed it and vacuumed it out. However, after I put the fan back
in, the computer won't turn on. The red light in the front blinks
just a bit, but the computer won't turn on. My brother thinks my
power supply has gone bad. Or could it be a problem with the CPU fan?