Windows 10: PC starts lagging then monitor shuts off into "No signal" Unless i restart ,the monitor...

Basically i've been running into a problem where my PC would start lagging then after it lagged for sometimes the monitor would shut off and go into "No signal" state, though the moitor shut off the computer itself is still seem to be running fine, i asked for help because usually the problem was not happening as frequent as today.Usually it'd happen once a day, or twice if unlucky. though now after 10 minutes of opening my pc it starts happening immediately, and it has become such a frustrating problem that i can't seem to know what's happening.I checked the event log, and i see power kernel

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PC boots up but monitor shows 'no signal' and keyboard not working.

'No signal' means that your monitor is not receiving a video signal that it can display. This is usually due to one of the following causes:

1- The cable going from your computer to your monitor is loose. Power off the monitor, re-attach the cable at both end, power on your monitor. (This step is N/A if you have a laptop or an AIO.)

2- The signal your graphics card is sending to your monitor can't be displayed by your monitor. Boot the computer to Safe Mode, choose a low resolution signal, restart your computer normally, switch to the 'Recommended' resolution for your monitor.

To change the signal resolution: Start > Settings > System > Display > Display resolution.

Your problem is not related to your BIOS, unless you made changes to the BIOS yourself.

 

Primary monitor gets no signal from PC after waking up from sleep mode.

I recently set up a second monitor for my PC. Everything works fine except for the monitor which shows no signal after my device has been in sleep mode. The monitor works and turns on like it should, but it loads up the installed Samsung software saying there is no signal to the PC. My secondary monitor immediately wakes up, and the primary only recognizes the PC if I restart the system or am powering it up after it has been shut down. This only occurs after the device has been in sleep mode. How do I get my main monitor to have a signal as well?

The monitor that receives a signal from the PC is a 2560x1440p 165hz Samsung Odyssey G5 (Secondary)

The monitor that does not get a signal when I wake the system unless I restart is a 2560x1440p 240hz curved Samsung Odyssey G6 (Primary)

The monitor works and turns on like it should, but it loads up the installed Samsung software saying there is no signal to the PC.

 

No signal after restart or shut down.

When I try to shut down my PC, all fans e.t.c. turn off, and display cuts, but if I turn power back on, my monitor displays no input. The problem is the same if I restart, only my computer does not turn of at all. If I hold down the power button, I can make the PC boot into safe mode and into Windows through UEFI, but I cannot install updates for Windows, or turn off my PC normally. When I turn the power back on, my monitor still has no signal, but occasionally, my PC fans e.t.c. will stop, and start again, but still no signal. I have tried reinstalling all drivers and installing MSI monitor drivers, but nothing has changed. I am running a 6750xt GPU and the MSI AG321CQR monitor.

Any suggestions would be very valuable, thanks in advance.