Have a dell tower and want to know how to fix the fan

Computers and televisions do not mix well. The television doesn't understand the computer Operating System and video signal.

Hopefully, our Computer Guru Larry Ng will be along soon.

Sometime even if the power and voltage is correct it may be the problem with the smps. Check the cable first and you remove/Change the RAM and try.
If issue persist, the problem is with the motherboard

The fan on your power supply is shot. Replace your power supply.

The fan(which runs on a bearing) has aged, it must be replaced. Luckily this is an easy and cheap fix. Pick one
http://bit.ly/9qzXBz

dell has web download manual jim

sounds like it could be a bearing in your hard drive. is this problem constant? If so, I would open up the tower and disconnect the hard drive and then power up the tower again. if the sound goes away--you need to get a new hard drive. If not, you could have some dust bunnies in your cooling fan.

It could be due to a failture of either the SMPS fan (Power Supply), the system cooling fan or the Videocard fan... Now checking the power Supply fan issue is easy... Take a toothpick {wooden} n insert it between the fan fins at the back of your tower... This is the fan that is visible from the back of your tower... Now if the noise stops then it is the SMPS fan issue

If it still persists then do the same procedure with the CPU fan located on the inside of the tower.. this is a bit tricky but you seem tech saavy enough to do so but anyways this is the link for a step by step procedure of getting inside your desktop

http://support.dell.com/support/edocs/systems/ws670/en/ug_en/index.htm

The third case is the Graphics Card... now there is no way we can say this with certainty but you can do this... remove all connections from the back of the tower.. remove the graphics card, connect just the power chord n start back up... if the noise is gone then the Video Card is the culprit.. REMEMBER TO REMOVE POWER CHORD ALL TIMES YOU OPEN THE TOWER N BE VERY VERY CAREFUL N FOLLOW THE MANUAL  :-)

on the computer you will see 4 leds labled A B C D. make sure all are Green. if not there is some issue withe the system.

I'm serious even though it sounds like a joke.
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Hope this helps!