hello,
i mean i reset the pc and it works after i reset it once. i tried press the switch on button again but it won't work so i press the 'reset' button and it works. so it mean restart the pc again.

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about monitor heating issue, i have a table fan just about 10 inch away from the monitor and the room temperature is about 26 degree celcius.
i never tried video card reseating, does this procedure mean the video card is loosening or not properly seated inside the cpu?
thanks for replying