Not sure if posting on the right forum, so if moved I will understand. One of my computers which has windows 7 started getting black squares that blinked when the cursor is moved over them, moved and also some remained still. It doesn't happen all of the time but enough to be irritating. I've run malware and virus programs but am not finding anything. Could my monitor be failing? I have another monitor I could try but haven't yet. I've had monitors fail before but never like this if that is the case.
Computer: HP Pavillion S5120W, 32 bit, 4 gigs ram and I use Chrome browser.