Posted 23 October 2010 - 04:18 PM
A friend of mine is computer-illiterate, so I try to help her when she has problems. Recently, her computer has been blocking the internet and I can't seem to figure out the cause. Here's a rundown of what has happened:
Her default browser, Firefox, overnight stopped loading any pages. It would give her the error message, "Unable to connect. Firefox can't establish a connection to the server." Her internet connection is fine and she is able to access the internet through Internet Explorer 8. I had her clear her cache, cookies, history, etc and even uninstall and reinstall Firefox. None of it worked. She continued using IE8 to browse the internet, but a week later that browser stopped loading pages too. She was able to log onto AIM for a few hours after that, but then that was blocked as well.
The first thing I tried was to have her install Spybot and MalwareBytes and run a scan. However, whatever was blocking the browser connection started blocking those programs from updating and installing properly. I then had her do System Restore and choose a restore point before any of these problems started. Her computer was able to access the internet again, but only through IE8. I then instructed her to restart under Safe Mode with Networking. She was able to successfully install both programs and run scans of each. She removed a lot of infections and I figured that would solve the problem. However, the next day her computer started blocking IE and AIM again. The only way to get connection back was to do another System Restore.
This problem has now gone over my head, so I turn to the experts. Does this ring any bells? Is there something else we can try? Thanks!