Top 20 Dell OptiPlex GX520 PC Desktop Questions & Answers

This is most likely the power supply. You may be able to take it to a store like best buy for testing.

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time to replace the key board

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try right click screen look for view in its list there should be small icons

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That is Not A Question And You Can Add Pictures To A Web Site You Are Creating !

Just Complete your Project!

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It really depends on what you have now. Go to crucial's site and use the scan computer tool and it will tell you how, if you can and the parts if possible.
Frankly this is the safest and surest way of doing this.

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No such thing. If you want to unlock your BIOS so you can overclock the computer, the CPU must be overclockable from the factory. If the CPU is locked you can't do it.

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Go to & enter your Model & search for Bios updates

I’m happy to help further over the phone at

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If the power light is blinking amber - The computer is receiving electrical power, but an internal power problem might exist.

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You need to have software to do it. If you do not have MS media player etc then it will not play but there are many others that if yo look can be used for free.
So first look for media player, if there is no player then that is your problem. Do also check and make sure the music has either MP3 or similar as if it is not encoded properly it will not play.

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unplug the machine and try removing the bois battery for a few minutes, usually looks like a quarter, marked with something like "CR2023"

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can you hear any beep sound from the pc?
if your desktop power coming on?

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not much info but go to audio devices in device manager. right click for properities to find drivers. reinstall if needed or go to pc website and enter model/tag number when it displays drivers, pick the Audio files and download/install the drivers for your pc. you question is not specific enough for a specific solution

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It means parity circuit error.

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Go to device manager and click on DVD/CD drives.

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Virus's can do this, also if you have Malwarebytes it may be out of service, uninstall that,

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An Amber blinking power button indicates a low voltage problem. This can be caused by a defective power supply or a defective motherboard. Just to make sure that nothing else is causing the problem, remove any PCI cards like modem, video card, sound card, etc... Remove the memory modules and disconnect cables to CD/DVD drives. Look at the USB ports to see if any are damaged.

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change the battery inside the computer on the motherboard then fix bios setting and them save and reboot should work fine then battery dead

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just open the case and remove the BIOS battery wait for a while then return it

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Depends on whether it is a windows password or a bios password. For windows password try OPH crack. It is free. Bios password would need to come from Dell to registered owner or there are companies online that will crack it for a fee.

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If your screen has nothing but black when you power it up IT IS NOT BOOTING UP. rephrase your question

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