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win7 system, laptop. Suddenly, the computer keeps restarting for no reason. After restarting, it displays:

Phenomena: Restart without reason

Cause: Some stubborn viruses in WIN7 are forced to delete infected important system files by the firewall, causing system failure.

Solution:

Method 1: Use the WIN7 installation disk to repair.

Steps: 1. Modify the CD-ROM drive boot in BIOS

2. Insert the installation disk and restart. After entering the WINDOWS installation screen, select Repair System.

Method 2: Use the notebook system recovery shortcut keys to restore the system.

Steps: Acer ------- Alt+F10

Asus --- ------------------F9

Shenzhou(Hasee)------------------Home

HP-----------------------F11

Sony---- ------------------F10

Dell--------------------- -F8

Lenovo---------------Body shortcut keys

Founder------- ----------Ctrl+/

Benq---------------------F10

< p> Tsinghua Tongfang-----Ctrl+/

Great Wall--------------Ctrl+/

Method Three: Use the CD GHOST file to reinstall the system

Steps: 1. Modify the CD-ROM drive boot in BIOS

2. Insert the installation disk and restart. After entering the installation screen, select Automatically install the system.