Hi everyone, I'm working at an Internet Cafe and recently I have encountered this problem. After formatting one of our PC, everything is working fine. I have installed all the necessary softwares needed. Everything is just fine. To finish it up, I shut it down and put the back the case cover. And then after that, the problem began. After I turn it on, the monitor blinks white and then it has no signal and no display. The CPU fan spins, the Mobo has light green light on. I didn't know what happened. Everything was just fine and suddenly the problem occurs. Please help me guys. I wanna solve this problem. I have formatted several PCs (around 15 units) in our cafe and no problem occurred. What am i supposed to do? Please help me guys. I'm getting stressed and pressured. Thanks guys. Sorry if I posted in the wrong section.