Here are some do it yourself guides for computer repair.

If you forget your password to log into Windows 10 or Windows 11 here is a guide to reset your password to log back into your Windows 10 or Windows 11 computer.

If you have fallen for some type of scam where you call a number for so called tech support and they remote accessed your computer and are worried about what they could of ran on your computer. The best thing to do is a Windows 10 or Windows 11 reset which will save your individual files like documents but you will have to install individual programs back like Chrome and other programs.

This guide for reset is for Windows 11 https://www.youtube.com/watch?v=HIRuMV5B_Ak

This guide is for reset for Windows 10

If your computer is running slow scanning for Malware is a good idea. I like to suggest Malware Bytes.

I would also recommend you installing and running CCleaner there is a free version. If you do scan the registry and remove unused parts make sure to make a registry backup first just in case there a issue after.

Hope this helps.