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#11
The CPU will only be drawing small amounts of power when you first turn on the computer i don't think it would be the PSU holding it back in this case, although you could test the PSU if you know how or get it tested to rule it out but i think at this point i would take heed to the CPU light and replace or try another CPU.
There is Malware out there that can effect the computers firmware so the instance you turn the computer on then that sort of Malware is in effect, it would mean that if this was the case it would be hard to detect unless you have knowledge. Not saying this is the case but its a possibility.
It seems strange that the Computer just stopped working like this unless you have been overclocking and fried the CPU there is no real reason for a CPU to just die they are pretty resilient if you look after them. it could be bad bin but that is a pretty small percent too because of QC measures.