I have hp probook 4520s lap. But now it does not boot. When I press switch on button fans are working but it shows black screen. HDD light just blink one or two times when start but it will not continue. And usually web cam light should blink one time when startup but it doesn't. I connect to different monitor but couldn't see a output.
This lap bought 3 months before but it doesn't have international warranty. Therefore I can not do anything. If someone can provide any clue or suggestion that what happened and what should I do, appreciated.