Signal Loss

[YaBoiiJmoney]

So my HP Omen 25L desktop is randomly saying no signal then turning off then back on and keeps doing it. I have restarted my desktop, I have reset my desktop and unplugged and plugged my cables back in and tested them on other things to see if they work and they do. So what do I need to do? 

[Bill_To]

Greetings @YaBoiiJmoney 

Is the 25L in warranty?

A "no signal" error would be produced by the monitor. So it looks like the monitor is active because you see monitor video output (the no signal error).

What specific cables are you disconnecting and reconnecting? The monitor power cable, the PC to monitor video cable, or the PC's power cable?

Resetting the 25L would suggest you are unplugging the 25L's power cable, And you are depressing and holding down the power button for a while, a few times, to drain residual MB power.

Your next statement seems to indicate either: the 25L works using a different monitor after resetting the 25L. Or the monitor works when testing the monitor using a different video source.

Is the 25L now working or are you still seeing the "no video signal" if you are testing the 25L using a different monitor. Or is the primary monitor working when using a different video source?

A 25L: hardware problem or BIOS corruption could be indicated if the 25L continues to power cycle after resetting the 25L.

Isolating the problem would involve testing the 25L's core components to find the possible failing part or attempting a BIOS recovery outside of the operating system.

A local PC Tech would be an option if your PC is not in warranty. The Tech could try a BIOS recovery using a Serial ISP Programmer. Or the Tech could attempt to isolate the faulty component.

Regards