5 pc maintenance
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Transcript of 5 pc maintenance
PC Maintenance
PC Repair and Troubleshooting
Maintenance
• Maintenance - activities done to conserve the original condition of an asset or resource while compensating for normal wear and tear
• Computer maintenance - practice of keeping computers in a good state of repair.– Corrective Maintenance - performed to correct an
already existing problem– Preventive Maintenance - performed to avoid
problems from occurring
Preventive Maintenance
• Importance:– Saves money – maintain rather than repair– Saves time – prevent rather than troubleshoot– Safeguard your data– Improves performance
• When to perform:– The frequency of the maintenance will depend on
how often the computer is used and what is it used .
Computer Maintenance
• Computer Cleaning - practice of physically cleaning the interior, and exterior, of a computer by removing dust and debris
• Back Up - Important data stored on computers may be copied and archived securely so that, in the event, of failure, the data and systems may be reconstructed
• Disk Maintenance - Disk storage, such as your hard drive, fills up with unwanted files over time. Files may become fragmented and slows the computer down
Computer Maintenance
• Registry - Operating systems files such as the Windows registry may require maintenance.
• Computer security - protection of information and property from theft, corruption, or natural disaster, while allowing the information and property to remain accessible and productive to its intended users.
• Updates - Software packages and operating systems may require regular updates to correct software bugs and address security weaknesses
Maintenance ChecklistActivity Frequency Auto?
Scan hard disk file systems for errors Daily Yes
Scan for viruses Daily Yes
Back up data Daily No
Clean monitor screen Weekly No
Defragment hard disks Weekly Yes
Scan for hard disk read errors Weekly Yes
Clean mouse and keyboard Monthly No
Check for full hard disk volumes and remove unnecessary files
Monthly No
Update virus definition files Monthly Sometimes
Check power protection devices to ensure they are still protecting the system
Quarterly No
Maintenance ChecklistActivity Frequency Auto?
Check power supply fan for ventilation and dirt build-up and clean if necessary
Quarterly No
Back up CMOS information Quarterly No
Check processor temperature, inspect heat sink and fan to ensure they are working
Annually or Whenever case is open
No
Check hard disk for temperature and vibration Annually (or whenever case is opened)
No
Clean exterior of case Annually No
Clean exterior of monitor Annually No
Check and clean interior, motherboard and expansion cards if necessary
Annually No
Check internal connections and cables Annually No
Computer Virus
• Run without the user wanting it to and/or create effects that the programmer wants but that the user did not want or request
• Have the ability to "infect" or modify other files or disk structures
• Replicate itself so it can spread to other files or systems.
Types of Virus
• Boot Sector Infectors - attacks the boot program and is executed by the system when the PC starts up
• File Infectors - attack and modify program files by loading itself into memory and waits for a trigger to find and infect other program files
• Macro Virus – these programs use the built-in programming languages and when opened they duplicate themselves into other documents and spread
Virus Prevention
• PC– Connections is equal to risk– Software Installation– Use Backups– Control Access
• Networks– Control your connection– Scan shared files
• Removable Media– Scan before use– Remove before Reboot– Disable Booting from Removable Media– Boot Password– Abstinence
• Internet– Obtain software from reputable sources– Scan new downloaded files– Beware of automatic downloads
Backup
• Risk to your data– Hardware Failure– Software Failure– File System Corruption– Accidental Deletion– Virus Infection– Theft– Sabotage– Natural Disaster