PC keeps registered random inputs

Question

Hi,

I use Clip Studio Paint a lot, and I first noticed this problem yesterday when hovering my mouse over my brushes, it kept scrolling without doing anything. I unplugged and replugged my mouse USB in and that fixed it. Earlier, my keyboard started spamming the letter "L" over and over without me touching it, but replugging my keyboard in fixed it. I'm trying to draw now on my XP-Pen tablet, but hovering my nib over my tablet just automatically registers as me pressing / clicking. I don't know what's going on and why it keeps registering false random inputs. It's making it hard to do much since I keep getting random disruptions and can't draw.

Answer 1

Since the problem is affecting multiple input devices at different times, a good first step is to disconnect all nonessential USB devices, restart the PC, and then test one device at a time. Also check Settings > Accessibility > Keyboard and make sure features such as Sticky Keys, Filter Keys, or Toggle Keys are not causing unexpected behavior, and review Time & language > Typing > Advanced keyboard settings in case the input layout changed unexpectedly. Update hardware drivers through Device Manager and checking Windows Update > Advanced options > Optional updates for device-driver updates.

If the issue continues, the best isolation step is a clean boot, use msconfig, then Hide all Microsoft services, disable the remaining non-Microsoft services, and disable startup apps from Task Manager before restarting. If the random inputs stop in clean boot, re-enable items gradually until you find the culprit.