install anything just prior to the problem whether it be an addon/app/security software? you can always reset the browser to default and see if it helps. or you can do a system restore to a restore point just prior to when the problems started. finally you can go into safemode with network and see if they work there. if so, it is some third party issue.
I have Chrome on my computer and is works well. I also have Internet Explorer and Firefox. As of a few days ago both Internet Explorer and Firefox don't work. They come up with blank screens but don't respond to searches. This is on Windows 7. (By the way, I have run Malwarebytes (the paid version) and CCleaner). Any help would be greatly appreciated.

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