Ok, my friends son's system has a continous beep, according to HP themself it's CPU related (overheated, seriously damaged). The system boots, nothing happens, no POST beep, no screen just black, fans rotate. Is it the CPU that has taken damage? It's an older pavillion, "a6412.sc" sticker. s775 DualCore @ 1.8GHz. More information than this I cannot give. Thankful for any replies given.