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07-05-2017 09:36 AM - edited 07-05-2017 09:36 AM
I'm currently working on an Hp Compaq dc7900 Base Model Ultra-slim Desktop PC. Upon attempting to power on the desktop, the LED light blinks red and beeps 4 times. Most forum posts I read regrading the issue have said it's a power supply issues. I've tried several different external power supplies all with the same result. I can't boot the computer to get into the OS or BIOS. If anyone has any idea what the issue could be I would appreicate any suggestions.
07-05-2017 09:59 AM - edited 07-05-2017 10:01 AM
HERE IS THE TROUBLESHOOTING MANUAL for that PC. On page 58 - Table A-2 indicates the
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10-31-2018 07:43 AM
Thank you for posting in this thread. Unfortunately based on when the last response was made, I have closed this thread to help keep comments current and up to date. We recommend starting a new thread for your issue.
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04-24-2019 11:53 PM
I Have this problem and I have tried helping the power supply by unplugging my mouse and keyboard and I made sure nothing else was either but this problem still exists, I can sometimes if I wait a day or two get it to work for about 30 minutes any ideas what the problem can be?