Accidentally left the computer on overnight (which I never do). Computer was still running when I went to use the computer in the morning but the monitor was in sleep mode (but I have stand by disabled). I turned the computer off by the button and rebooted, the computer turns on fine but the monitor gets no signal, the light just stays yellow. All the other components appear to be running fine, all fans spin, and the HDD appears to be running, there's just no display going to the monitor. Tried a different monitor, different power supply, same result. Help please.
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