Computer fan buzzing
ok i have a 300 GB HP Pavillion Slimline with XP Pro, which i had a friend put on it cuz vista sux...neways, my fan keeps making this loud obnoxious buzzing sound sometimes continuous, sometimes not at all, if i have it in my bedroom its constant but when i hook the VGA to my tv in the living room i barely get anything out of it, would i need a new fan, or is it something else entirely?
If it's out of warranty (or even if it still is) Open up the tower and identify the fan.
If it's a case fan, you can unplug it and run the pc but you should keep an eye on temperatures using something like HWMonitor http://www.cpuid.com/hwmonitor.php (free software)
If it's the CPU fan, change it.
If it's the Power Supply fan, get a new power supply... for an HP a 40$ Thermaltake430W will do a fantastic job.
There are also good chances that a lose wire is just near A fan causing that noise...
All in all, open it, identify and resolve... think of it as Advanced Lego.