If you are using Celcom Boardband or maybe others then suddenly you bump into error “A connection to the remote computer could not be established. You might need to change the network settings for this connection”.
The next thing you do is to google. Then you will see tons of comments like remove device drivers and try again, run rarepair.exe, reinstall Celcom software, and others.
I can ensure you on way will definitely works provided is not the hardware fault. Reinstall your Windows 8 (maybe you are using other Windows).