![1](https://cdn.sabay.com/cdn/news.sabay.com.kh/wp-content/uploads/2014/12/113.png)
១. Disk Cleanup
Click Window+R and type word "cleanmgr" and press Inter
Select the Drive that you want to do and press Ok
![2](https://cdn.sabay.com/cdn/news.sabay.com.kh/wp-content/uploads/2014/12/215.png)
![3](https://cdn.sabay.com/cdn/news.sabay.com.kh/wp-content/uploads/2014/12/311.png)
Tick any file you want to delete and press Ok
![4](https://cdn.sabay.com/cdn/news.sabay.com.kh/wp-content/uploads/2014/12/49.png)
Press Delete Files
![5](https://cdn.sabay.com/cdn/news.sabay.com.kh/wp-content/uploads/2014/12/57.png)
២. Disk Defragmenter
Disk Defragmenter allows user to prepare file orderly to make computer running smoothly and faster. Go Run by clicking Window + R and type the word "dfrgui"and Enter
![6](https://cdn.sabay.com/cdn/news.sabay.com.kh/wp-content/uploads/2014/12/69.png)
- The Button "Analyze disk" is to analyze if it needs to defragment or not
– The Button "Defragment disk" is for Defragment
![7](https://cdn.sabay.com/cdn/news.sabay.com.kh/wp-content/uploads/2014/12/76.png)
៣. Customize program while Start Up
Go to ( Window + R ) Key type “msconfig” and press Enter។
![8](https://cdn.sabay.com/cdn/news.sabay.com.kh/wp-content/uploads/2014/12/86.png)
Press Tab Startup to remove tick not for StartUp and press Apply and Ok
![9](https://cdn.sabay.com/cdn/news.sabay.com.kh/wp-content/uploads/2014/12/93.png)
![10](https://cdn.sabay.com/cdn/news.sabay.com.kh/wp-content/uploads/2014/12/104.png)