Lesson 4; Computer Maintenance

Alexa Stewart (:

Objectives for Chapter .

Identify problems that can occur if hardware is not properly maintained .

Identify routine maintenance that can be preformed by users .

Identify maintenance that should be preformed by experienced professionals .

Maintenance Issues

The performance of a hard disk starts to slow and printer problems occur .

The keyboard and mouse can become sluggish and the monitor may not work properly .

Unorganized and Unprotected cables can create a safety hazard .

Hardware Maintenance “Keyboard & Mouse ”

You should check and clean the keyboard periodically .

A mouse with a ball can be difficult to move if the rollers are clogged .

Hardware Maintenance“Printers”

Cleaning a printer helps prolong the printers life .

Never spray an aerosol directly on the printer .

Wear latex gloves while cleaning a printer .

Computer Memory

One way to measure a computer’s power is by its capacity to remember .

Data stored in RAM is temporary . If RAM fills up , then the processors

continually goes to the hard drive to replace old data .

Preventative Maintenance “disk defragmentation”

Disk Defragmentation occurs when a piece of data is broke up into many pieces .

The sectors are stored in blocks of nonadjacent clusters , thus creating fragmented files .

Recycle Bin

Holding area for files . Contains files that have been deleted

from the hard disk . To empty the recycle bin right click the

icon and click empty recycle bin .

Temporary Files .

To free memory for other programs . To act as a safety net to prevent data

loss . For printing .

Cookies :D

A cookies is a small text file that a web site uses to identify a specific computer .

Cookies are not a threat to your computers security .

Specialized Maintenance .

The following should be done by a computer professional

Replacing the power supply . Replacing the processor . Replacing or adding RAM

Risk of networked computing .

The security of computer network is challenged everyday by hackers and virus attacks .

People create computer viruses and infect other computers .