Cleaning dust from the system unit., PREVENTIVE MAINTENANCE, Replacing a defective RAM., CORRECTIVE MAINTENANCE, Running an antivirus scan., PREVENTIVE MAINTENANCE, Reinstalling a corrupted printer driver., CORRECTIVE MAINTENANCEC, Checking computer cables., PPREVENTIVE MAINTENANCE, Replacing a damaged keyboard., CORRECTIVE MAINTENANCEC, Deleting unnecessary temporary files., PREVENTIVE MAINTENANCEP, Backing up important files., PREVENTIVE MAINTENANCEP, Repairing Windows after an error., CORRECTIVE MAINTENANCE, Cleaning the cooling fan., PREVENTIVE MAINTENANCEP

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