closing driver's window, sometimes goes back down

[Yoadrian]

I have a similar problem with my passenger window. When I open the door from the outside of the car, the window drops a good 5 inches.

When I try to raise the window, it starts to go up, then goes back down while I am still pressing up on the window button. I have to release the button and immediately hold it down again to get the window up. It is making a terrible sound- almost like breaking glass, but I know it is not.

I've been told that I need a new regulator...