The screen on my laptop keeps flickering, occasionally the whole screen goes blank. Ive gotten it repaired many times but still keeps happening, any one have a clue whats going on?
You said you had it fixed may times before? It could be a loose cable that is connected to either your motherboard or to the screen itself. It could also be the refresh rate to which your resolution is set to.
Yeah, I would attach an external monitor and see if the problem is still there. If the external monitor works correctly, then it's safe to assume that it's a problem with the screen rather than the graphics.
Before messing with an external monitor, I would start with wiping and re-installing the latest video card drivers. If the problem persists, check your power/hibernation settings to make sure nothing funky is set there.
You say you've had it fixed before... what was done/replaced? I honestly would purchase a new laptop before replacing a panel in one.