Streamline unnecessary system files: download and install Windows7 Optimizer first. After downloading and installing, start the Windows7 optimizer, first enter the system optimization page, and make necessary optimization according to your own use environment. Then enter the system cleaning, the newly installed system does not need to be cleaned, and directly enter the "system disk slimming". First, analyze the contents of the system disk, and the software will sort out which files can be safely deleted. Generally speaking, everything can be deleted except the system wallpaper. After the analysis is completed, click Delete. (If you want to delete it, you can go to the folder C:\Windows\Web\Wallpaper, copy Lenovo_ 1 to another disk, and then copy it back after deletion. Generally, this wallpaper is kept, and the rest feels ugly. Which one to delete depends on your hobby! )

Close the hibernation file. Method: Start-> All Programs-> Accessories-> Command Prompt, run as an administrator, enter "powercfg -h off" and press enter;