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a software program capable of reproducing itself and usually capable of causing great harm to files or other programs on the same computer

Corrupted File

Is damaged and either won't open, doesn't work properly, or interferes with other software.

Head Crash

(computer science) a crash of a read/write head in a hard disk drive (usually caused by contact of the head with the surface of the magnetic disk)


are a type of virus that copy themselves over and over again until they fill all of the storage space on a drive or network.

Antivirus Software

Software that identifies the presence of a virus and is capable of removing or quarantining the virus.

Virus Signature

A portion of the virus code that is unique to a particular computer virus and makes it identifiable by antivirus software.


feature that automatically saves open documents at specified time periods.


the act of providing approval and support

Backup Software

copies data found on the hard disk to a backup device


give or bring back

System Image

This is a copy of all the files and folders on the system disk (and other specified hard disks) on a computer. You can use a System Image backup to restore the computer to exactly what its configuration was when the System Image backup was created.

System Repair Disk

Also known as system recovery disk, this is a CD or DVD that you can use to boot your computer into the Windows recovery Environment after a serious error has occurred that shuts normal Windows operation down.

Power Spike

spikes are fast, short duration electrical transients in voltage (voltage spikes), current (current spike), or transferred energy (energy spikes) in an electrical circuity

Surge Protector

electrical device inserted in a power line to protect equipment from sudden fluctuations in current


Uninterruptible Power Supply that contains a battery so the user can save data in the event of loss of power


A database that Windows uses to store hardware and software configuration information, user preferences, and setup information.

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