Can't install software, or open .exe files

Thank you all in advance for your time and intellect in helping me with this problem. This is my first time posting on a forum, but I have for years used an appreciated this precious resource. I have worked with computers for many years and am not a pro with them but very handy.

My wife on her laptop acquired a trojan virus (system security 2012). I was able to get rid of it with my computer's virus scanner through sharing center. After that I tried to open every other program but it comes up with "open with" box and I can't open it. The only way I can open programs is if I "run as administrator". Then I Tried to install another program on the computer but I am unable to install ANY program. I even had to run as admin just to open snip tool.



*I see that I have posted before. It's just been so long that I forgot about it.

Thank you Brink,

I was able to successfully merge the files and they work now; consequently I am also able to install software. I used the malware program to find and remove the last of the virus, and have installed a anti-virus on the computer. Thank you so much. ;p