Shutdown during POST

[malkie]

I attempted to boot my PC after I had changed a noisy CPU fan,the fan did stop for about 2 seconds, there was one long beep during the post after which the PC shut down, nothing is visible on the monitor.The BIOS is Award.
Is my CPU fried ?

 

[BuckeyeComputers]

someone said in another post cpu errors dont beep...
i would check to make your that is the process of changing the fan that you didnt inavertly pull a card especially video or ram check to make sure every thing is still seated snuggly

 

[malkie]

I have taken all the cards and memory out and reseated them all, still the same problem.

 

[BuckeyeComputers]

another possiblity was this a cpu fan that you replaced? and was it a 3 wire plug? some boards will not turn on if the bios does not get the message that a cpu fan is plugged in and working properly

 

[malkie]

Yes it was the CPU fan I replaced, it has a 3 wire plug, the replacement fan is very similar the only difference being the size of the heat sink.

 

[BuckeyeComputers]

is it possible that the fan is faulty not sending a signal back to tell the pc that it is working properly?

 

[malkie]

Many thanks for your help, Ive just plugged the old fan back in and hey presto! the PC booted up fine.

 

[BuckeyeComputers]

Thats great. Glad to help