Lenovo notebooks allow the computer to quickly release memory. Adjusting the registry can solve this problem. The specific steps are as follows:

　1. Press "win +r" and enter "regedit" in the run bar to enter the registry.

2. Open the registry to "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\explorer" in sequence.

3. Click on "explorer", then create a new "AlwaysUnloadDll" (DWORD type) on the right and set its value to "1". (Note: The dynamic link library files called by many programs still occupy part of the memory when the program is closed. The subkey AlwaysUnloadDll is 1, which means that when the program is closed, the memory occupied by the previously running DLL file will be released.)

4. Restart the computer.

Note: The above operations involve modification of the registry, which carries certain risks. Please back up the registry and important data before operation, and please use it as appropriate based on your operating proficiency.