Too much software.
The slow running of the computer may be due to the installation of too many similar software. It is recommended to avoid repeated installation and "slim down" the computer!
There is not enough space on disk C.
The computer is running slowly, which may be because there is not enough space on disk C. It is recommended to install ordinary software on disk D to release the space on disk C!
Junk file accumulation
The computer is running slowly, which may be the accumulation of junk files. It is recommended to clean up the garbage regularly to make the computer "breathe" more smoothly!
Disk defragmentation
The computer is running slowly, which may be due to too many disk fragments. If defragmentation is on, try turning it off and see the effect!
Task manager
When the computer is running slowly, you can open the task manager (Ctrl+Alt+Delete) to see which process takes up more CPU, and end unnecessary processes appropriately. But please be careful not to end the system process at will!