2005 Accord Coupe 4 cyl. I have had multiple problems with the power windows over the past 2 years. First, the driver's window stopped working. Change in regulator fixed that. For 2 years afterward, I would hear a slight click and boing noise. I thought perhaps the main window switch was broken. Switched one with a friend as an experiment and the noise continued. Windows worked, so it must be a quirk. Last week the passenger window stopped working. Installed a new regulator and no such luck, window didn't work. Today, I changed that window switch. At first, it didn't work and I could hear the click and boing noise again. Continued to try to operate the passenger switch and it worked. I assume the noise was the main window switch (driver's side) was making the noise as it was constantly trying to reset itself. Now with the change in the passenger window switch, all my problems and weird noises have ended. Maybe this will happen to you; therefore, the post

 

Thanks for posting. Dirty switches are a frequent problem on all power windows.

good luck