Could be one of two things: The power supply for the monitor has a loose connection and as soon as it starts heating up the connection is open. Or your video card could be going bad. I'd bet on the former, though. Why not try swapping out the monitor for one from a friend and see if the problem persists? If it does, either get the monitor fixed or replace it.
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Could be one of two things: The power supply for the monitor has a loose connection and as soon as it starts heating up the connection is open. Or your video card could be going bad. I'd bet on the former, though.
Why not try swapping out the monitor for one from a friend and see if the problem persists?
If it does, either get the monitor fixed or replace it.