I have run into a strange problem with my computer. When it is on, it sometimes acts as if the monitor goes into power saver mode and when the mouse is MOVED to wake up the computer/monitor the monitor stays black. It appears that my monitor is working correctly, because I can STILL read the message "no signal." When I turn my computer on the light on the front of the case comes on and the back panel of the case where the LAN is lights up the fans kick on, but the HEATSINK fan does not start up. I can't get anything to come up now. Like I said, it appears to be on, but the heatsink does not start up and there is no signal to the monitor. For the last couple of weeks one of the fans was MAKING a weird noise. Any help is appreciated.Ok, I unhooked everything and blew out the case and tried to take out the cpu fan, but the didn't work. Anyway, I plugged it in and it came on with no problems. The cpu fan is still making noise, though. When I first turned it on it began to boot up, but then shut down. It is up and RUNNING at the moment. Any ideas? Thanks.