Computer can't connect to the internet?

Okay so on the seventh of February I used the computer just as I normally do, it's a pink sony VAIO laptop, and it was working fine. For some reason the next day it claimed to be connected to the Wi-Fi, but not connected to the actual internet. I tried connecting to my iPhone 5S's personal hotspot Wi-Fi, but it continued with the same message. I then tried connecting to my Wi-Fi from different devices like my Dad's laptop and some tablets, and all were able to work properly and fully use the internet So I'm guessing the issue has more to do with my actual laptop. I did call my service provider and he came to the same conclusion, although the only solution my actual laptop detects is an issue with the router though it's weird for different Wi-Fi to all have the same problem. I did try disconnecting the router etc just in case but no results. Not to mention how I tried a system restore and that came out with an error too What should I do?

Something would be wrong with the drivers or the antenna inside.
But first, download the Wi-Fi drivers from here.

http://esupport.sony.com/perl/select-system.pl?DIRECTOR=DRIVER

You need to enter your model number and series in the above link.

I had the same problem with my Vaio, turn it off for a few hours and try again, used to work for me, I had no idea why this happened though and it was a complete pain in the ***, if it doesn't work take it to a computer shop and ask them if they can find the problem, they'll usually fix these sort of problems for next to nothing.

Check your router settings, maybe you daddy limited access to your computer because you were sitting too long on facebook.