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Dell XPS 8500 not turning on

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#1 rafavee


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Posted 21 October 2016 - 04:52 PM

Hello. I have a Dell XPS 8500. For the past few months it had been increasingly difficult to turn it on, often having to press the power button numerous times or press it really hard. The other day it no longer would start up. The motherboard lights and the PSU BIST LED on the back both still light up. When I try disconnecting the power cord and then reconnecting it, the LED Assembly underneath the power button briefly flashes for a second. Not sure what the problem could be. I thought I might need a new PSU, but then why does the PSU BIST LED still light green? Thanks in advance for your help.

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#2 Zone_86


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Posted 22 October 2016 - 03:50 PM

You could try a few simple things like removing and reseating your PSU ATX connectors to the mobo, and also reseating your memory. Past that possibly a CMOS clear (and reset default values within the BIOS). Though your PSU has a green light it may still need to be replaced, and that particular Dell XPS (8500) was the beginning of Dell not using proprietary PSU specs so you can replace it with any normal ATX spec PSU.

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