My system was acting up today. After it had been on awhile the display, even on desktop, would get "garbled". In short order I concluded it was the video card. I did have it overclocked a bit so I went back to defaults including 60Hz and 600x800 or so. Still bad. Yes the GPU fan was working. System voltages were good. Going to safe mode did not help. All connections were tight. An external fan with side cover off didn't help.
The card (see below) is installed fan side down so the "back" of the board is up. There was some dust on it, particularly around the output connector. I dusted it with a makeup powder brush, at least that is what my wife calls it. That fixed it.
The card (see below) is installed fan side down so the "back" of the board is up. There was some dust on it, particularly around the output connector. I dusted it with a makeup powder brush, at least that is what my wife calls it. That fixed it.