The newly bought computer has a very slow network speed. How to solve it?

& lt 1 & gt； Start-Run-Enter gpedit.msc to pop up the group policy window-Computer configuration on the left-Management template-Network -QOS packet scheduler-Double-click on the right to limit the reserved bandwidth-Select Disable in the pop-up window to increase the network speed by 20%.

Cleaning method of drive C 1 Open my computer-Tools-Folder Options-View-Tick the "Show all files and folders" option-OK 2. Delete all files in the following folder: X: \ DocumentsSandSettings \ User name \Cookies\ (Keep DocumentsSandSettings \ User name \ Local Settings \ temp \ X: DocumentsSandSettings \ User name \ Local setting temporary Internet files \ x: \ DocumentsSandSettings \ User name \ Local Settings \ History \ x: DocumentsSandSettings \ User name \Recent\ X All files under \ Windows \ temp \ All files under (temporary files) (history) WINDOWS\ServicePackFiles (backup files after upgrading sp 1 or sp2) X: compressed files under Windows \ DriverCache \ I386 (backup files of drivers) X: \ Windows \ Software distribution \ Download all files. 3. If the system has been upgraded by windoesupdade, please delete the following files: hidden files under x:\windows\, starting with $u ... 4. Then defragment the disk, and please quit all running programs during defragmentation.