Question about Acer Aspire T690 (AST690UP820A) PC Desktop

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When turned on,makes long buzz, no video,rest of pc still runs

Why is my pc buzzing when turned on?

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  • qick Dec 12, 2008

    HP pavilion sllimline high pitch sound monitor says "no imput" Monitor screen is black

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Do you mean beep? Beeping may occur due to RAM corruption (indicated by three long beeps). Failure of input or output devices may also cause beeping. first unplug the RAM, if the same beep continues, then the culprit is RAM. if not,then replug it and unplug the KeyBoard. do the same with the rest of the I/O devices. Also try to put ur processor in ur frens PC, and vice versa, then u'll know if ur processor or the motherboard is not working.

Posted on Oct 11, 2008

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Katherine,

Many times when a desktop is making a strange buzzing noise - it is due to a fan malfunction of some sort. Other reasons include a power supply that is faulty or possibly a bad internal speaker.

I would first check the fan(s) for the computer. Start by turning the computer off all of the way. Next, unplug the cords from the unit. You'll need to isolate just the computer tower itself. Next, you'll want to get some compressed air or a vaccuum and gently clean out the areas where the system case fan vents are. If you know how to open the case for your desktop, it wouldn't be a bad idea to make a quick visual check inside of the case for things that may be caught in the fans. Some desktops open via screws on the back plane, and some open with a pull tab/lever.

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