I'm running Windows 7 64bit and Office 2013 64 bit.
I recently uncovered some spyware and a virus on my computer. I installed several different tools in an attempt to clean my system (Avast, Malwarebytes, Spyhunter, Spybot, Max Spyware Detector, etc.). After running various scans and removing and quarantining various files, I believe I have finally eradicated all malware from my computer.
The problem is that after doing all of that, I can no longer get MS Office 2013 to run. First I was getting an "Office encountered a problem and cannot start" error when I tried to run Word. Even in safe mode I could not get it to run. I tried using the automated Office repair tool (it offers a "quick fix" mode and an "online fix" mode). I tried the "quick fix" and it said it fixed all problems. There was no difference - I still could not open Word (or any other Office program). I ran the "online fix" and after it runs for a few minutes, it says "Background Installation ran into a problem. Make sure you're connected to the Internet and we'll automatically resume the installation as soon as possible." If I just sit and wait, eventually it completes the repair and says it's done. Still, I can't start Word.
I uninstalled Office and deleted the program files directory. I ran CCleaner and cleaned up all registry problems that occurred as a result of the unintallation. Next I went online and signed up for a trial of Office 365 32-bit edition. The installation of that process behaves the same as the repair program. It gives me the same error message "Background Installation ran into a problem. .....". After the installation is complete, I cannot start any Office programs at all. After this new installation, I don't get any error messages. I just click the icon to start Word and nothing happens.
Can anyone give me any advice about how I may have screwed up my PC and what to do about it?