I'm only able to access Google Chrome, because it's in my Quick launch bar. Once in there, I can do everything in my browser that I've always been able to.
So, you can access the internet? If so, then try the following steps to get a Malwarebytes Anti-Malware scan to test for infection. It sounds like you opened a BIG can of worms on your PC by unzipping that file. Follow these steps closely and hopefully you can get it installed and scanning.
Please download Malwarebytes Anti-Malware and save it to your desktop from here.
Double-click on mbam-setup.exe to install the application. When the installation begins, follow the prompts and do not make any changes to default settings. When the installation has finished, leave both of these checked:
Update Malwarebytes' Anti-Malware
Launch Malwarebytes' Anti-Malware
Click the Finish button.
MBAM should start and you will be asked to update the program before performing a scan.
From the scanner tab, select a QUICK SCAN and click the Scan button.
After the scan finishes, click on the Show Results button to see a list of any malware that was found. Make sure that everything is checked, and click Remove Selected. When removal is completed, a log report will open in Notepad. This log is automatically saved and can be viewed by clicking the Logs tab in MBAM. Copy and paste the entire contents of that report in your next post.
MBAM may tell you to reboot your computer to complete the process. If so, then reboot and post the contents of the log afterwards.
If MBAM shows an infection, we'll move this topic to the AM I INFECTED? forum for better results, but post the log here so it can be evaluated.
FOR INSTALLERS THAT WILL NOT RUN DUE TO BEING BLOCKED BY ROGUE PROGRAMS
Go to where you downloaded the MBAM installer and right click it. Select rename from the menu and type in “mbam-setup.scr” (without the quotes). Hit enter and double click the mbam-setup.scr file. MBAM should begin installing.
Once the installation is complete, MBAM should start on its own but it probably won't. If it doesn't, you will need to navigate to the C:\Program Files\Malwarebytes' Anti-Malware folder. Here you will need to right click the MBAM.exe file and rename it to mbam.scr. Hit enter and double click the mbam.scr file to start the program.