Symptoms of a 'Dead' CPU

Hello techspot community!

I would like to ask how can I check that a processor if is burnt or not!, are there any obvious symptoms?
I kindly ask because my laptop stopped working after a format and when I turn it on I see black screen, BIOS won't boot. But from other hand keyboard light turns on and HDD led blinks for 3 sec after it goes Off.
from repair shop I was told that CPU is dead!!
...But I guess that processor is still working since motherboard fan works still and processor goes hot!
please help with any explanation or suggestions for my case!!

thanks!
 
If your repair shop has stated the CPU is dead. So is the processor. They are one in the same. Getting a CPU (Processor) for the board my work.
 
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