[Lirange]

Use CCleaner to clean unwanted data and fix registry errors. Use Window's default Disk Cleanup tool afterwards.

Use Revo Uninstaller instead of Window's default uninstaller. You can also uninstall programs on CCleaner.

After uninstalling a program(s), use Autoruns to revome or disable unnecessary startup drivers. You may also find some hidden malware on the way. If you're unsure of yourself, right-click the file and use the search feature. You can also remove some of your startup drivers via Windows Defender.

Thankyou!

I also noticed that after I cleaned my computer, it has gotten faster. LoL loads faster for me, and I don't get the usual 2-3minute unplayable lag at the beginning of every game.