First, if you turn on the machine to clean the dust, it will be relatively light. Download driver wizard 20 12, which can help you download drivers that suit you. Did the landlord download 360 guards? One of his functions is the game optimizer, which can close some unused programs, and some you have to close yourself. Don't turn it off wrong. You are responsible for the consequences-! Second, slim down the system. 1. Open my computer-Tools-Folder Options-View-Check the "Show all files and folders" option-OK.

2. Delete the contents of the following folder:

All files under x: \ documents and settings \ user name \ cookies \ (keep index files)

All files under x: \ documents and settings \ user name \ local settings \ temp \ (user temporary files)

X: All files (page files) under \ Documents and Settings \ User Name \ Local Settings Temporary internet Files.

All files under x: \ documents and settings \ user name \ local settings \ history \ (history)

X: all files under \ documents and settings \ user name \ recent \ (shortcuts to recently browsed files)

X: all files under \ Windows \ temp \ (temporary files)

X:\WINDOWS\ServicePackFiles (backup files after upgrading sp 1 or sp2)

Compressed file under x:\WINDOWS\Driver Cache\i386 (backup file of driver)

All files under x: \ Windows \ Software Distribution \ Download.

3. If the system has been upgraded by windoes updade, please delete the following files:

X: \ Hidden files starting with $u ... under Windows 4. Then defragment the disk, and when defragmenting, please quit all running programs. 5. After defragmentation, open Start-Programs-Accessories-System Tools-System Restore-Create a restore point (it is best to use the current date as the name of the restore point).

6. Open "My Computer"-right click on the system disk-Properties-Disk Cleaning-Other options-click "Clean" in the column of System Restore-select "Yes"-OK. If it doesn't work, then pick up a hammer and hit the computer and buy a new one. I can wait for all the answers ... I hope the landlord will adopt them.