At home, my monitor's been blinking off as if it gets no signal as soon as Win7 goes from the swirly-dot logo boot screen and would normally prompt for login. I can login blind without problem, but the screen only wakes up if I turn it off and on again. The screen's a Dell LCD (SP2009W) that's about to hit its 5th birthday, IIRC. The video card is a GeForce GTX 560 Ti. Plugs are seated properly, though I haven't cracked the case to see if the card is loose.
Anyone experienced this?