Let's start at the bottom:
In Device Manager, how is your display adapter listed? Whatever it is, right-click, and do an "Update Driver." Also run a new performance index, and post the answers.
No basiclly all my visual effects have gone but in Porformance Options all visual effects are enabled
Do you still have other Glass effects (i.i. see-thru borders, etc)?
That Didnt work either same old style alt tab come up
All --
Hmmm... I just tried something.
Try CTRL-SHIFT-F9, then, try your Quick Launch shortcuts again.
Nup no go for the Windows Key + Tab
Me too... after upgrading to 5728, neither the "3D preview", nor the "minimize all" shortcuts in the Quick Launch work any longer. Before, I'd found that Windows Key + 2 initiated a 3D preview, but this no longer works, either. Windows Key + TAB does, but not as conveniently, because you have to click while holding down this key combination.
OMG the Alt+Tab 3D Effects have Dissapered its just the plain old alt tab what wrong......???