Recently, i plugged in a flash disk which i suspect w'd have been infected with a virus or malware that caused all my executables to have a size of 0 kb. This causes windows to display a notification that THIS APPLICATION CANNOT RUN ON THIS COMPUTER .
I reinstalled windows and then i was able to download and run some basic applications on my local disk C:
Below is a screen shot illustrating the problem.
Any help before i format my partition is highly appreciated.