Hello @Karen Pillay ,
If you don't know the password, the best option at this point is to do a clean install of windows.
As for your WIFI not showing, it could be due to one of several reasons:
- WIFI adapter issues: It's possible that your WIFI driver is corrupt, and need replacement.
- Compatibility problems: Maybe your WIFI uses a more up to date hardware/software, and may not be supported by your windows machine.
Unless fixing the WIFI problems can help you get the password, clean install windows first and then see if the new installed windows still have the same WIFI problems.
Thank you.