Hello, According to your discription, firstly you need to identify if it is a monitor broken or a system crash. Maybe try connect your machine to another available monitor to check the result. If it is a system crash/ freeze, you can try below methods to help fix: Try check if press "Ctrl+Alt+Del" together when the machine hangs. If press "Ctrl+Alt+Del" together can open task manager, check which process is unresponsive and end that task. Hard drive, RAM, video card, or another hardware can also cause a computer to lock up. Try update drivers, check if there is driver confliction, and uninstall 3rd party anti-virus softwares. If there is no blue screen, it is also possible you are experiencing screen flickering, there are slaso some ways listd in this link to help fix: Troubleshoot screen flickering in Windows - Microsoft Support
COMPUTER CRASHED, no blue screen, screen glichtching out.
My pc hadn't had problems for months, I got a new monitor for Christmas, a new msi one, plugged it in... worked fine since Christmas, until either one stuffed it. I was playing roblox, and about 45 mins after the pc being on it crashed, the screen froze but there was no blue screen, or none that would or could show, so I switched my monitor off and on, when it came back on it was glitching and flickering light, my pc wouldn't turn off after pressing the power button twice, I had to hard shut down now its off and I'm afraid to turn it haha, there was a small driver update available and a windows update to be fair, but I doubt that could be the case, I've got an i7 6700k and an rtx3050 mini storm X, 16gb ddr4 ram, 650w power supply, my pc has had issues in the past 4 or 5 months ago, fixed it after windows reset and driver update, this is completely out of the blue... any help?