Just ruled out malware in other section of this forum. Laptop's integrated keyboard suffers intermittent lock-ups for no apparent reason (sometimes works, sometimes doesn't, right now, doesn't). Touchpad seems deactivated (tried FN + F7 in case of accidental disable, but that's not the case), every option related to touchpad are grayed out in 'mouse' menu (config panel). Before malware check-up,tried system restore to last week, all problems were still there, so I reverted back. I have to use visual keyboard to type. Have to work with external mouse because touchpad doesn't work. Tried reinstalling touchpad drivers from Acer website, and didn't work. Computer worked perfect a few days ago.