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How do I reset error code SC543 on ricoh aficio sp4210n?

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My printer isn’t working and gets an error code SC543. IT is a rico aficio printer. Thank you

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My compaq presario went to sleep and will not wake up. I turned it off and now it will not restart. If I press the start button, the fans will spring more a moment but then shuts down.The computer has been off for a few hours.

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I have an Averatec 22″ AIO that came with an Nvida 8500M video card that stopped working. Averatec told me they can’t get any more new cards so I had to find a used one online. The make/model and all the numbers on the card match identically to the original one from the system. After installing it it didn’t work and Averatec said I need to update my firmware. Where can I get this firmware I need to make this card work?

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2

I just put my flash drive through the washer and dryer cycle. Is it safe to use?

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1

The bottom portion of my Dell Latitude D52 laptop screen only displays colored vertical lines of various sizes and doesn’t display anything else

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The bottom third of my Dell E6500 laptop screen is completely black and doesn’t display anything. Sometimes it works for a while but then it goes black again. What’s wrong with the screen?

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