If your Windows 64-bit installation doesn’t show thumbnail images of PDFs, you can use the free 64-bit Adobe Preview Handler to make it work again. When I upgraded to Windows 8 64-bit a few months ...

Windows: Lots of videos have built-in thumbnails in Windows Explorer, so you can see a quick preview of each file—but this only works with popular video formats that work out-of-the-box in Windows.

Sarah is a freelance writer and CNET How To blogger. Her main focus is Windows, but she also covers everything from mobile tech to video games to DIY hardware projects. She likes to press buttons and ...