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Dell Dimension C521 freezes randomly at startup.

By iPlus10 ·
I have a Dell Dimension C521. The computer will freeze up randomly when I first turn it on at the Dell loading screen. The bar will load half way and it just freezes there. I have to manually turn the computer off and turn it on again. It usually works fine after that. It's been doing that a lot lately, maybe 50% of the time.
I ran Diagnostic tests and they all passed. Anyone have any idea what the issue may be?

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Did you check the HDD

by Kenone In reply to Dell Dimension C521 freez ...

Download the manufacturers' test utility and check the drive. It could be just massively fragged but sounds more like it's about to fail.

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This may be of assistance to you

by OH Smeg In reply to Dell Dimension C521 freez ...

http://support.ap.dell.com/support/topics/global.aspx/support/dsn/en/document?c=au&cs=audhs1&dl=false&l=en&s=dhs&docid=2131708C06ECC031E0401E0A551739FC&doclang=en

Seems that there could be a BIOS Bug causing this to occur but if that's the case you really need to read the Warnings before applying the BIOS Update and you need to be sure that the Power Can not go out while it is being applied.

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