Windows Explorer crashes, restarts, then crashes again

This happened recently after my sister downloaded something from the internet, and when I opened the folder to transfer it to her flash drive, a notification popped up telling me that, "Windows Explorer has crashed," and then it restarts (not the computer, just explorer. It sort of "refreshes" the desktop), then loads, and then crashes again.

I can still use my laptop normally from adjacent accounts, and when I tried deleting the file (the source of all of this, I'm assuming) it says that I need the permission of my main account, even though this account that I am currently using is also and administrator.

Can someone give me a little help? If there is none to be found I can use this side account for a while until something can be done, but it is incredibly inconvenient.

I am using Windows 7 currently.
 
Hi,

I'd recommend running ShellExView (found by googling ShellExView). Once you've opened the application right-click any non-Microsoft extensions and check to see if the issue persists.