Can you say what "I have to put my machine back in time" means ? Do you mean recovering to a prior save point ?
If you let Windows automatically download hardware drivers you could have picked up incompatible drivers. Get a new set of drivers from the Packard Bell web site and save them on your PC. Load them after you come up with no network.
Yes , means I put it to a prior Save point.
I'll try that and see if it works , Thanks.