Can't see PNG previews in Windows 7?

Question

I´m using Windows 7 x64. I can see the .jpg, .gif, etc. preview thumbnails but if .PNG, I only see the generic image, and not the image preview like in the other formats.

What can I do to fix this?

Answer 1

This is caused by having a program installed, such as Adobe Photoshop, that takes away the "default program" from Windows Photo Viewer.

You can restore this by following the two following articles, which outline it much better than I could here:

http://www.vistax64.com/tutorials/73715-thumbnails-windows-explorer.html

and

http://www.vistax64.com/tutorials/83196-default-programs-program-default-associations.html

Answer 2

It could potentially be an issue with the icon cache on the computer.

Perhaps take a look at this issue here I don't know if its the same issue but it seems to be a few easy steps that could potentially resolve your problem

Rebuilding the Icon Cache Database

1. Close all folder windows that are currently open.
2. Launch Task Manager using the CTRL+SHIFT+ESC key sequence, or by running taskmgr.exe.
3. In the Process tab, right-click on the Explorer.exe process and select End Process.
4. Click the End process button when asked for confirmation.
5. From the File menu of Task Manager, select New Task (Run…)
6. Type CMD.EXE, and click OK
7. In the Command Prompt window, type the commands one by one and press ENTER after each command: CD /d %userprofile%\AppData\Local DEL IconCache.db /a EXIT
8. In Task Manager, click File, select New Task (Run…)
9. Type EXPLORER.EXE, and click OK.