I had a system that was bought 5 years ago, worked fine for a long time, some day I put it away for few month, and try to use it again later, it stopped working, black screen, no mainboard check sound. tested ram, gpu, finally think it is either mainboard or cpu, since I never had a damaged cpu after play PC for 16 years, installed hundreds of PCs. So I think it is most likely the board, I tested the cpu on another board, haha, black screen. no mainboard check sound. CPU damaged, this is a old 5200+ box edition, using original cooler, never OCed, no visible damage on CPU, no burns etc. PSU still working, ram still working, gpu still working, did not test the board yet. what do you think? what maybe the cause of CPU damage.