Keyboard & Mouse Freezing~Requires Hard Reboot~Windows 10

I have two older gaming computers that have been upgraded with solid state hard drives and I wanted to go to Windows 10 from Windows 7. Installs when well, only a few minor problems. But on using both computers I have run into the same problem. Randomly, the mouse and keyboard will freeze on both computers. Even the power button will not reboot the computers, rebooting requires unplugging and re-plugging the power cord.

Really don't think it's a hardware problem since both computers are different manufacturers, hardware and configuration. Anyone have any ideas/solutions?

Thanks,
Big Rock

Hi Ken,
Thanks for the response. Yes, the hard drives were upgraded before w/ Windows 7. The computer I'm running now has a Intel (R) Core (TM) i7 CPU processor, 870 @2.93 GHz and 8.00 GB installed ram (forgot to add that info). Never had a freeze issue when I was running Windows 7.
That said, I recollect that the freezes only happen when I'm on the internet. I'm now running Microsoft Edge and the freezes seem to occur when I'm going to multiple web sites and have a number of tabs running. So, any possible connection?
Thanks,
Gary

Yes, did find some hidden devices, haven't got around to deleting them.

Computer completely freezes, can't input anything, even the start button doesn't work.

Don't have any audiovisuals on either computer

Have finally found the time to delete the hidden devises, mostly really old drivers. Also went thru the other devises and found some duplicates and other greyed devises (indicate not present?). Should I go thru and delete the duplicates and greyed out devises?

Just had another lockup. Had to do a hard reboot. I was in Devise Manager, was trying to an find examples of the greyed out items when everything froze. Guess my theory about the freezes being related to Edge isn't valid.