black screen crash when watching videoes.

Win 7 home premium 64 bit HP P6-2003a. It did it twice,crashed to a black screen and wouldn't start again the second time so I took the desktop apart and cleaned it including the motherboard which didn't have any leaky or bulging electrolytics,in fact it still looks like new.I checked the power supply voltages but not while it was under load and then DeOxited the memory sticks and sockets same for the graphics card. I think I can remember this happening before and it was the AMD catalyst driver that needed updating or something? Whats the common cause of this fault?

Lance1 said:

What browser are you using? Have the thought of updating Adobe Flash Player

I asked for some help just in case my computer wouldn't start again? I went to HP support and downloaded a program that automatically updates the drvers and sorts out problems and it worked.Yay! Thanks for the reply mate,it probably was the flashplayer needing an update? P.S I'm using Firefox because its open source and doesn't let anyone spy on me. lol