Hey , my PC is acting just like your PC does ! randomly ? yes . First, I turn my PC on , then I login to my account.After Logging in, about 3 minutes later my monitor suddenly gone black and the PC is restarting itself.Then it goes black again and is not restarting itself this time. My Monitor said "No Signal" though my PC's Power Lights are flashing! I'm really getting angry after restarting PC for 3 times by myself or itself.How bad isn't it? Time to get a new one ?

No! I don't think so. I ain't got enough money to buy a new one. So please... tell me if anyone figure out anything.