Pop up screen continues to appear asking how doi I want to open this file?

Hello Stanford,
We regret for the inconvenience caused. Please be informed that AVG program will not conflict with the functionalities of the windows features. However could you please let us know whether you have tried disabling the AVG program and check whether you could access the start menu? If not please follow the instructions provided on the article http://avgclick.me/TempDisableAVG to disable the AVG program.
If not please contact Microsoft support or a local technician so that they could check whether there are any issues with the installations of the Windows 10 operating system.
Thank you.

"how do you want to open this file"
this  is the pop up screen that continues to appear on my computer, I just got the AVG ZEN free trial, I have windows 10. I was told by AVG that this could be a windows problem, After contacting windows, they re-installed windows 10 indicating (that ) should remove any issue, they thought that it might be a virus, but I have AVG and malware protection. However I cant access the windows start button by mouse or keyboard and I'm not getting any answers, HELP. 

Hello Stanford,
We regret for the inconvenience caused. Please be informed that AVG program will not conflict with the functionalities of the windows features. However could you please let us know whether you have tried disabling the AVG program and check whether you could access the start menu? If not please follow the instructions provided on the article http://avgclick.me/TempDisableAVG to disable the AVG program.
If not please contact Microsoft support or a local technician so that they could check whether there are any issues with the installations of the Windows 10 operating system.
Thank you.