There is no other computer you can access? You are currently posting from a phone? That will make things much harder. There are no yellow exclamation marks in Device Manager, correct? I would usually advise to uninstall the drivers in Device Manager and then reinstall but unfortunately you cannot do this.
If you know somebody with a USB wifi dongle that would help. It would get you on the internet if it's not a Windows problem.
Internet gateway would be your router/modem. Can you reboot your modem and router? Also make sure you are getting a IP address and DNS address automatically.
What XP SP is on the computer? Right click Computer > Properties.
Open a command prompt and type ipconfig /all. On XP you need to click the little icon in the menu bar and then select Edit > Select All. Then Edit > copy. Paste to text file. Save the text file to a USB flash drive. If you are posting from a computer then paste the text file from the flash drive.
Edited by JohnC_21, 02 January 2017 - 11:05 AM.