OS: Vista Home Premium Hardware: HP Pavilion Entertainment PC DV9700t (Laptop) So, I've been having this problem with my computer for the whole 1 1/2 years I've owned it. I would be in one application and switch to another then I can't click on anything, the mouse moves and works but it wont work on clicking on buttons or icons. Sometimes I can click something in the quick launch bar and by the time it opens I can't click anything in the program. Sometimes in full screen programs (games) it will minimize the program like Im trying to click on something on the desktop, now the only way to "fix" the problem is press ctrl+alt+del and when the options page comes up I click on cancel once to get the clicking working again and once more to close the options, after i do this I can click again. i've been bouncing around the net recently trying to figure out what my computers problem is, now you see, I recently bought a new hard drive and loaded the OS again with the "factory settings discs" which means the OS plus all the crap that the company throws on there that u need to uninstall right away that serves no purpose. So you would think a clean install would fix it? Nope, same problem with the "new" install. I think that there might be a problem with some of the beginning software installed or maybe with the desktop windows manager (dwm.exe in system processes) Does anyone have any insight for me on this problem? Thanks in advance.