Beeping Sound and Black Screen When Turning on My All-in-One

[Yoyu1023]

When I tried to turn on my computer  today, it was making a series of beeping sounds: 3 long beeps, then 4 quick beeps. Also, my monitor is black.

I tried unplugging and holding down the start button for 15 seconds as someone suggested, but this didn’t help. I believe I forgot my PC in sleep mode for a few days and wondering if this was the trigger.

My PC is an HP All-in-One I purchased three years ago.

Any help would be appreciated!

[Lil_Boy_Blue]

Hi

Hardware

3.4

The Main-Board displays a power failure (crowbar).* Indicates potential power system failure.

1 Reduce to minimum config (CPU, Main-Board, PSU, Single memory DIMM) and isolate failed component. 2 Reduce further if issue persists. 3 Test known good PSU. 4 Replace affected component. 5 If unable to confirm source, replace CPU, Main-Board, PSU.

I suggest that it is a fault that wants an expert to diagnose, like a good local PC shop.

AND potentially expensive, so if you get an opinion and a price please post the details, and someone may be able to assess the viability of the repair.

[Yoyu1023]

Thank you for your reply. With Best Buy’s help, I managed to start my PC. They thought it was the Intel Graphic Driver so they reinstalled it. However, when I started my computer again this morning, the same thing happened. I will ask them to take another look and let them know the steps you suggested.

[Lil_Boy_Blue]

Hi

Windows Logo key + Ctrl + Shift + B
(This key sequence actually restarts you graphics driver (W10 only).)