does your laptop have a built in factory reset? a reset disk that came with it when you bought it or an option to create reset disk? If your laptop previously connected online then something has stopped it and that needs seeing to. Have you backed up all your data such as documents, pictures and music etc. A clean factory restore for w7 should get the wireless system working again. I would always do a clean w7 install then let it update and finally go to w10. If you are not sure type your model number into google. How to factory reset Asus A42J. Then after backing up to an external site or drive run the restore. This will wipe out everything on the hard disk that you have put on.
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