alvinkhorfire
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Re: XPS 420 CPU Switched Off by Itself.

Sorry for not replying to this thread for a long time. Still, thanks to both of you for trying to provide potential solutions to my problem.

@osprey4

I did remove all non-essential peripherals as you suggested. Well, I have unfortunately lost my Dell drivers and utilities disc.

I can get into the BIOS, but shortly after that, the computer switched off by itself.

I believe that my power supply unit is faulty. Is there any way for to confirm the PSU as culprit? Note that I do not have any multimeter, or any other voltage measuring device.

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