ok... recently ive had problem with my processor getting too hot. my computer was still operable, but whenever i was burning cds or doing multiple tasks on the computer it would begin to make a buzzing sound and eventually just shut down. so i bought arctic silver for the processor and that helped my problem for about a month, then the buzzing and overheating came back again even worst than before. so i came to the conclusion that i just needed a brand new processor. i bought a new processor and installed it along with the new fan it came with. now when i turn the computer on, the on lights come on, the fans are working too. but usually my computer beeps when i turn it on and it doesnt beep anymore. and my monitor is saying "no signal". before i installed my new processors, i could still boot up properly and do things on the computer, but now i cant do anything. while installing my new processor, are there any mistakes that could have been made to cause all of these new problems?