weird issues with gpu and monitor please help

gr0bar14a

Prominent
Dec 7, 2017
7
0
510
Ok im in a very weird situation and i ll start to describe the problems occured right from the start.
So i got this screen Asus MG279Q ,tried to connect it on my gpu ,a Sapphire Tri-X R9 290X OC via DVI at first ,no signal from screen,tried via HDMI again no signal ,so i ordered DisplayPort cables.
Allright i got the DP and the screen works awesome all night ,i play WoW basically .I wake up at morning and pc doesnt work ,seems my Power supply went off had a Corsair 850 plat for some years so i got a new one a Corsair 850 gold ,replaced it and pc starts working ,ok so i go home i plug in the screen and it fails on boot...anyway updated bios ,changed battery from motherboard but my pc fails at boot if i have the screen plugged in GPU ,if i remove it it boots and runs normally then i plug the screen on gpu and it keeps working.Also i couldn't put the screen to work at 144Hz sometimes ,was either locked at 60Hz or i was getting 143,90 Hz sign.
Plugged the screen on 2 different pcs one running a gtx970 windforce and the other a gtx960.First one boots normally the second one beeps 4-5 times on boot ,stops beeping and then beeps again for another 3 times and starts with red screen and starts working normally. .Replaced my GPU with the 970 but everything was awful screen was at 800x600!!! and weirdest thing of all was that programs and games that i had uninstalled some weeks ago returned on my PC!!!!tried to set up settings but everything was a mess!!!Anyway i put back the R290 AND i plugged my old EIZO via DVI (60 hz sucks i know) and it boots runs as usual .Im having this system
G1.Sniper M5 motherboard
Intel(R) Core(TM) i7-4770K CPU @ 3.50GHz
windows 7 64bit ultimate edition
24gb DD3 memory
the above mentioned gpu
samsung ssd 840pro 256gb
k don't know much about things pc wise but any idea and help is greatly appreciated since i need to start from somewhere and figure out what messes things.Thanks again
 
Paragraphs are your friend.

Well, Windows can be set to create restore points. If something screws up your system, the computer can use a restore point to set things back the way they were when that restore point was created. That MIGHT explain why some deleted things seemed to come back.

That's a high refresh rate monitor, and I believe that means to use it at a high refresh rate you must use display port, so that would explain the HDMI/DVI thing.

Nvidia and AMD cards use different drivers, so you can't just replace the cards and expect it to work. Even if you uninstalled drivers and installed the right ones, if the computer did use a system restore point then it undid all your uninstall/install work.
 

gr0bar14a

Prominent
Dec 7, 2017
7
0
510


 

gr0bar14a

Prominent
Dec 7, 2017
7
0
510
yeah that makes absolute sense thought it could be a virus thing at first,any ideas that might help with making my pc boost as a normal one?do you think changing to windows 10 could make things better for example?