It sounds like your monitor just went bad. The reason you can still hear sound is because there is nothing wrong with your sound card. You can try connecting the monitor to another computer to see if it works. If it does not, then the monitor has died.
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It sounds like your monitor just went bad. The reason you can still hear sound is because there is nothing wrong with your sound card. You can try connecting the monitor to another computer to see if it works. If it does not, then the monitor has died.