I have lost the ability to preview any files other than pictures in Windows Explorer. I posted a question on SevenForums but did not get a solution there.
I tried a System Restore to a point before the problem started and that did not work. I created a new administrator account and was...
administrator account
document preview
file previews
pdf previewpowerpointpreviewpreview pane
system restore
troubleshooting
windows 7
windows explorer