Computer not getting internet access though wifi?

[Kiroro N]

I have a friend whose computer has suddenly decided that it's not going to agree with any wifi connections. The computer will connect to wifi, but she cannot get online because there's not internet access.

She said that the issue did not occur after the computer automatically updated; she just came home from work one day and was unable to get internet access.

This problem occurs in all the areas she has tried getting wireless internet access from, not just in her own home.

She has tried resetting her router.

Her computer is a Compaq with Windows 7 Home Premium.
EDIT: Also, neither of us are techies, so in regards to those DHCP tips, could you provide some instructions that are easy to follow? We both read that and it might as well have been French...

[robin p]

If you are connected, but don't have inrternet access it usually means either you didn't get an IP address from the wifi access point or router etc. It means that either they don't want you accessing the internet or your machine is not configured correctly.

Make sure your IP address condig is set to DHCP and just confirm your wireless network interface is getting an address by opening a command prompt and typing "ipconfig /all"