I also have a 4 year old Lenovo IdeaCentre 510A CPU (desktop computer) with a 3.9 gHz Intel Core i3-7100. SATA HD. Twelve gigs of RAM and 1 Terabyte drive. Also a Passport 1T external drive that has nothing to do with current issues.Win 10 Hom (x64) v.22H2 updated 3 days ago. I run Belarc to check. I have a (USB) wired 82 key generic keyboard and optical mouse. Please let me know what other info you'd like.
PROBLEM: Starting about a week ago out of the blue (nothing had just updated) my monitor began showing large black blocks in random places on the screen that change WITH EVERY KEYSTROKE. So right now, as I type, when I hit each letter on the keyboard, black boxes of various shapes appear, and go away when I type the next letter. But new ones appear. I've managed to get it to just show black boxes instead of random colored boxes so far. I can also click anywhere on my screen with the mouse and make the boxes appear or disappear. This is driving me nuts, of course!
I have changed physical keyboards. I solved the problem of the row of numbers not typing
I do not have another monitor so I can't try a different one. I changed and updated the display drivers, the monitor driver, the keyboard and mouse driver and I've looked at every Win 10 setting for all of those things and experimented with different settings. I reverted my display to the original recommended settings and refresh rate. I started it up in Safe Mode. Nothing odd there. I disabled each addon individually (I only have 3) and tried typing. I disabled my Antivirus/Firewall software and tried typing. I did more than this, too. None of it made any difference.
This only happens when I'm typing. I have no new computer peripherals except the (gaming) keyboard I switched out for the old one, which I tossed out. I have kept meticulous notes of each thing I've done and I always reboot after each thing I try or install. I've had computers since about 1984 and DOS 3 but my human memory isn't what it used to be. I'd sure like to buy more and install it! 😉
***NOTE: I do NOT want to change to Win Edge, Chrome or any other OS. I have Firefox. Suggesting I change is a waste of your time and mine.***
Ideas? Appreciate any help anyone can give. Hit me with your questions! Thanks!
Kathy on the OBX in North Carolina