So I'm new to Windows 7 but have been enjoying it relatively problem free after my upgrade until today. Out of the blue my touch-to-tap on my laptop became disabled and all of a sudden the taskbar started acting glitchy, when I moused over an icon with multiple windows open, the icons would show up, but when I went to click on one, I would be directed back to whatever my screen was on previously. Thinking this was a problem with the driver, I reinstalled the driver, but this didn't fix the problem. Also, when I use a mouse rather than the touchpad (and disable the touchpad even) the results are the same. Also I've found that Alt-Tab no longer works properly, with the previews of all my open windows appearing only for a split second before disappearing, without allowing me to switch the active view. Oddly windows-tab still works fine. Does anyone have any ideas what could be causing this perplexing issue? I've tried some other forums, but I haven't found anything similar to this. Thanks!