How is the computer running right now ? What issues and what browser are still having problems ?
You have Malwarebytes installed can you run a scan, I'll provide instructions you can skip the download part.
Please download Malwarebytes Anti-Malware to your desktop
Install the progamme and select update
Once it has updated select Settings > Detection and Protection
Tick Scan for rootkits
Go back to the Dashboard and select Scan Now
If threats are detected, click the Apply Actions button, MBAM will ask for a reboot.
On completion of the scan (or after the reboot) select View Detailed Log
Select Export > Select text file and save to the desktop
Post the Malwarebytes log