Screen Randomly Freezes but Computer Still Running?

So this has been happening ever since I got my computer. I took it in to see if a service could take a look at it and they ran a benchmark to get the usage to 100% for like 22 hours. Computer was still running fine he recommended me to get a UPS because it could be browning out but that solved nothing.

So what basically happens is that once a week or 3 times a day, it happens randomly, could be while playing a game or just browsing the web. What happens is that the monitor just freezes it is still on it is like a screenshot of my screen it stays still, cursor stops, audio stops, everything. The computer is still running fine it could be a failure in hardware but most likely not. It is not the monitor itself because it worked fine with the same monitor with my previous computer and I just got a new monitor last week.

I also noticed is if it happens once then it'll happen a few more times in a day then it'll stop for 1-2 days and start again, could just be a coincidence but I don't know...

Thanks, Alex.

Hope to get this solved starting to annoy me!

Check your connections to your PC/GPU and your monitor, however you have it connected. Make sure that there are no bent pins and that the thumb screws are hand tight plus a quarter turn. Then make sure you have the latest driver for either your onboard GPU or add-on GPU.

Bump again

bump .

Bump