Two days ago my start menu quit working in windows 10. I went through all the troubleshooting tips I found online, and even went as far as to reset my windows installation. Resetting fixed the issue, until I began putting my software back on... low and behold, when I started the PC the next morning, the start menu wouldn't open again. Reboot after reboot every once and a while the start menu would work, but most of the time it wouldn't. I then had to reset my windows installation yet again. This time I slowly made changes and installs one by one, making system restoration points after each install. The start menu continued to work, right up until I installed Avast and rebooted. When the PC came back up, the start menu wouldn't open. So I uninstalled Avast, and rebooted. It worked again. I did a little research and found someone on the forums who said that if you install it and then boot into safe mode that it would fix the problem, so I tried it. It did not fix the problem. So now I have been forced to remove and leave Avast off my machine because it's reliably creating this issue. Any thoughts?