Hi Sofi. I'm Greg, 10 years awarded Windows MVP, here to help you.
Sofi, your hard drive will always remain, it's what's on the hard drive that is erased or not. If you choose the deep clean Reset without saving files, it is a cleaner install that wipes everything off the drive. This means you need to have your files backed up in advanced and be prepared to reinstall your personal apps and programs that do not come from the Store app - which will have your Store games and apps ready to install once you sign-in.
The deep clean reset is important because just as the install gets corrupted and slows down, the User account you sign in with can also become corrupted and need replacement. When you choose to save nothing in the Reset, it will have you set up your account again which is a better install.
Here are all ways to Reset WIndows 10 and 11:
https://winbuzzer.com/2022/01/01/how-to-reset-w...
After install expedite all Windows Updates including Optional until no more are offered. Then import any drivers from the PC maker's Support Downloads web page for your model that are newer, or branded instead of generic. The most basic thing we need to learn to maintain a PC is how to keep the latest manufacturer's drivers current. Windows drivers are rarely enough.
Report back results for each step so I know what else to suggest.
Feel free to ask back any questions. Based on the results you post back I may have other suggestions if necessary.
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