i was using the internet fine yesterday and when i returned to use it again i realised that i don't have a connection no more so i went and diagnose it and it says that i dont have a valid ip configuration...
Not enough details.
You didnt mention anything about the ethernet cable,modem or router.(i mean what you did to it;eg:change cables)
Probably need to update driver?
Run>cmd
ipconfig /flushdns
ipconfig /release
ipconfig /renew
@ wireless can explain in further details?
He ment click start then click run, then type cmd into the box
After which a black box will come out
Type in:
ipconfig /flushdns
ipconfig /release
ipconfig /renew
Then see if problem is solved
For win vista or higher, just press start, and type in cmd should do the trick
Pressing the Windows key and R tgt will bring up the 'run' dialog also