Assembly fan running like jet engine

[steerstuffer]

When I first start up the computer the fan starts roaring and goes really fat like a jet engine. The only way is to press/hold the start button to get it to stop. Windows will not load during this. Computer tech said I needed new hard drive. Bought one and installed everything-still does it. I bought a new assembly fan and shroud (that is the fan that is going wild) and it worked for 2 days then it started doing the same thing. Any suggestions on what to do next?

 

[asalikus]

Take the panel of the case and see if the problem is solved.

 

[chromic]

i have the same issue, happens every other time i turn the pc on

 

[jerry6]

Which fan is making the noise ? A case fan , cpu fan or gpu fan ? What are sys specs ?

 

[steerstuffer]

Take the panel of the case and see if the problem is solved.

Take the panel of the case and do what?

 

[steerstuffer]

Which fan is making the noise ? A case fan , cpu fan or gpu fan ? What are sys specs ?

According to the manual to my computer it is the assembly fan #T4307 Fan and Shroud It is covered with a green shield.
It is a Dell Dimension 8400 P4, 630 (3GHz), HT, 2MB, EM64T
1GB DDR2 SDRAM
250GB SERIAL ATA, 7200

 

[asalikus]

Take the panel of the case and do what?

Haha, it worked for my friend's computer. Do you still hear your fans sound like a jet while the panel is off?