When I try to turn off my PS3 it beeps 3 times and stays on. I also have a problem where there is no picture coming on, so when I push the power button the screen just tuns black. I dont know if this is a double problem or one problem that does two different things. I have checked all the cables and made sure that they are plugged in correctly and done everything I can but its not seeming to work. i am assuming that it is an internal problem, considering I've tried everything I can. I cannot try alot because the screen wont come on, so I dont know what to do.
If it's on, hold the power button until it turns off. It should turn off eventually (keep holding after it beeps).
When you turn it back on, hold the power button until you hear a 2nd beep. That will reset the video and re-detect your display.
If that doesn't help, boot into safe mode and try the option(s) to repair the file system and/or rebuild the database (3/4).