Is in attendance a means of access I can verbs out my computer similar to it be brand topical short the retrieval disc?

Answer:

No none unless you travel to restore if virus have not get to it. If not you got to run get a disk or be in motion to a computer shop to get it done.
if you own a copy of the operating system to reinstall you can format the hard drive, you might own to reinstall some drivers though.
no unless you have a full copy of windows you cant. You can though download Ccleaner it is free and will uninstall programs,delete temp files and delete unused registry values. Defo worth running. Also enjoy a manual verbs out of your "My Documents" folder and run disk defragmenter in your system tools.
Yes, try to push one this buttons when you see or when you turn on your system , F8, F9, F10, F11, F12, F4, F5, F6, F7