I have a D620 about 4 yrs old. Lately, after I bring it back from hibernating the screen will make a 'pop' noise (like a short almost) then go blank. I can use the Fn-F8 like three times and it will come back. Usually it does it like twice and then it's fine.
any suggestions? I saw someone recommended pull the battery, unplugging and holding the power button to get rid of any static buildup, and am going to try it now.