I have a pc that have been working for quite a while. But then suddenly when i wake it up from sleep its just wont work i try opening up task manager but it wont open up and then it showing a blue screen. It restarted but when i try opening up chrome it says no connection i try opening up the wifi tab on the taskbar but it wont show up so i decided to shut down. When it went shut down the screen goes blank but the pc still running so i decided to pull the power chord than put it back in and it starts by itself (no screen )so i turn it off by the"holding the power button 3-5 seconds" so it finally turned off. Then i waited for sometime and turn it back on and it shows just black no motherboard logo no bios logo no nothing