Boot into safe mode and see if youcan access the internet from there. To boot into safe mode .. reboot your pc and as it begins to boot back up begin tapping the F8 key in 1 second intervals. You should get a boot menu. Choose Safe Mode with networking.
If you can get online in safe mode .. Download MalwareBytes Antimalware (free) from the following link.
The information on Computing.Net is the opinions of its users. Such
opinions may not be accurate and they are to be used at your own risk.
Computing.Net cannot verify the validity of the statements made on this
site. Computing.Net and Compnet Ventures, LLC hereby disclaim all responsibility
and liability for the content of Computing.Net and its accuracy.