The monitor won’t read HDMI from the pc after I accidentally disconnected both from the power source

[RaGe_KiLleR]

This is the pc I have but I’ll try to see if someone should this pc mother make model

[Bruce]

so the PC cannot start still?
that’ll make the Speccy rep[ort impossible.

moving forward, whatever we suggest will require you playing with the components inside the PC, a jjob so far you have not been able to do.
nothing wring with that - we all have our skill sets, and a big part of that is knowing when you are out of your comfort zone.

things we need to do to troubleshoot your issue would be;
[ul]
[li]remove that RX3070 graphics card[/li][li]remove the memory modules, cleaning them and their mobo slots[/li][li]installing one memory stick at a time, and in different slots[/li][li]testing the HDMI monitor and cable on another device[/li][li]testing the power supply[/li][/ul]
and various other tasks, all requiring your to be handy with a screwdriver and dealing with PC components.

since this all started with you unplugging the monitor and PC, whatever has gone pear shaped should be simple - “should” being the main word. (y)
have you double checked the power supply switch at the back of the PC where the power cable connects to the PC is turned on?
the cable is securely pushed in?
the cable is connected to mains power and turned on?
if using a power board, remove and connect straight to a mains outlet.

apart from that, I’d be suggesting taking the case into a PC repair shop. mainly due to this thread being 9 days old and we haven’t progressed at all.

[PeterOz]

I think you have a Gigabyte Z390 ( could be wrong)
Try This
Can you sww on the motherboard Cmos - see attached pic
19) CLR_CMOS (Clear CMOS Jumper) Use this jumper to clear the BIOS configuration and reset the CMOS values to factory defaults. To clear the CMOS values, use a metal object like a screwdriver to touch the two pins for a few seconds. • Always turn off your computer and unplug the power cord from the power outlet before clearing the CMOS values. • After systemrestart, go to BIOS Setup to load factory defaults (select Load Optimized Defaults)

If you can;t see the cmos pins
Try this
20) BAT (Battery) The battery provides power to keep the values (such as BIOS configurations, date, and time information) in the CMOS when the computer is turned off. Replace the battery when the battery voltage drops to a low level, or the CMOS values may not be accurate or may be lost. You may clear the CMOS values by removing the battery: 1. Turn off your computer and unplug the power cord. 2. Gently remove the battery from the battery holder and wait for one minute. (Or use a metal object like a screwdriver to touch the positive and negative terminals of the battery holder, making them short for 5 seconds.) 3. Replace the battery. 4. Plug in the power cord and restart your computer

[phillpower2]

RaGe_KiLleR

How long have you had this computer, if new, stay out of the insides of the computer and instead tell us how many screens were attached and post a picture of the back of the case where you have any screens attached.

[RaGe_KiLleR]

It was attached to one only but I know how to remove the gpu so I will continue that so I can give you the make model

[phillpower2]

How long have you had this computer,

Your computer to do as you see fit but why have you not answered my question or provided the requested picture.

[RaGe_KiLleR]

The computer is new and was attached to one monitor

[phillpower2]

Because the computer is new you should not be going anywhere near the insides of the computer, if you do you have voided your warranty and will have to pay any repair costs yourself.

Still no picture of the back of the PC, such a picture may give us a clue as to what is going on with the lack of display, not asking again and you have been advised as to why you should stay away from the insides of the PC so will leave you with it.

[RaGe_KiLleR]

Ok I’ll take a picture of the back

[RaGe_KiLleR]

[ATTACH type=“full”]10110[/ATTACH]

[RaGe_KiLleR]

[ATTACH type=“full”]10112[/ATTACH]

[RaGe_KiLleR]

[ATTACH type=“full”]10113[/ATTACH]

[RaGe_KiLleR]

What next

[RaGe_KiLleR]

So I put everything back and I noticed that the fans from the gpu aren’t spinning

[Bruce]

when Phill said “a picture of the back”, pretty sure he meant from the outside, looking at the back where all the cables get attached.