Working on a family member's computer - she has this symptom.
Searching forums, I found it's typically the front I/O board, or the power supply.
I've now replaced both - same deal.
Just looking for some confirmation/advice on next steps.
I want to be able to provide her with some cost estimates of what it would take to get it functional again. I do know the hard drive is good - slaved and copied all her data off, but if she can get out of this with a good running PC and not having to purchase a new one, I think that may be the cheaper option...