need tech help

I’m having a computer malfunction, and I’m hoping that one of you ODers who are more techno savvy than me can help me sort it out.

My scrolling function in Windows Explorer has gone completely MIA.  I can scroll, but at soon as I let go of the mouse button, the scroll bar snaps back to the top of the menu faster than I can click on a program. 

This just started yesterday, and it’s not my mouse, because if I try to scroll w/ my arrow keys or touch pad it does the same thing. 

If anyone can help, I would appreciate it, because I can’t access half my programs right now, and I can’t change white balance in PhotoShop, which is kind of something I need to do on a regular basis.