& RE: using daily pc cleaners after daily web work at end of web session, try also using-doing easy SFC-System File Checker tool 2 check 4 ANY problems, misc on-of YO pc; in Black command prompt window, type SFC /scannow , & press Enter aside from quick or full anti-virus scanning. & SELF learn easy what R via web keyword search - computer keyboard shortcuts. As they can help U-1 to cut down YO typing time like copy & paste. Best 2 copy & paste from web & save-archive in a little Word doc 4 reference in case U-1 as 2 look them up, it's just good info.