Red light on the motherboard

[thamu]

Hello,
hi guys i have a hp compaq that doest not boot,after switching on tha power the fans stops and the red led displays on the chases,how can i solve this?

 

[beanoslim]

It could be any of quite a few things.

Do you have another working machine that you can switch bits from?

1st off I'd try a different psu.