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Dell Dimension 4550 Shuts Down

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by kcaldwell17

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I have a dell dimension 4550 that worked perfect up until a few days ago when it refused to acknowledge the presence of a HDD and shuts down automatically after a minute. I tried booting from a CD and it won't get past the Dell loading screen. What is the matter with this thing?

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by robo_dev

If the power supply lost the 12V part of things, then the drives won't spin. The mobo and drive electronics run off the +5V part of the supply.

Do you hear the CD-ROM and/or hard drives spin up? Any burning smells?

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