Windows 7: Taskbar thumbnails of open documents and programs stopped working.

I accidentally cleaned up my complete temporary files and after that and lists are displayed instead of that.Can you throw some light on this and btw my OS is WIN 7 Home Basic 64 Bit which does not support Aero Features, so that Aero thing doesn't work with my OS. Apart from system restore,how can I restore defaults.Can you single out the file/s which are needed to restore my taskbar thumbnails.

I'm confused...If you don't have Aero then you do not have thumbnails in the taskbar...

Windows 7 Home Basic have this feature, but don't have Aero features. Other people also have this problem, please follow given links.I have also posted this problem in Microsoft forums.

My taskbar thumbnail view is stopped working - Microsoft Answers

Need to enable Taskbar Thumbnail in Windows7 HomeBasic,which was - Microsoft Answers

I would like to tell this forum happily, that my problem get resolved. Neither things worked but the registry restore.When I restored my registry to a backdated back-up created by my installed antivirus, the things got fixed like a charm.And now the taskbar thumbnails are working in my Lappy, hence so far it seems that Registry restore is the only solution for this problem.