The Thumbnail feature is no doubt very useful, however it also consumes some resources in terms of disk space. In Windows 7 Thumbnail cache are created so that the thumbnails in taskbar can be previewed much more faster. But if your hard drive space is very low, you may need to clear the thumbnail cache. This can be done by following these simple steps.
First of all, click Start, type Disk Cleanup and press Enter.

Then wait for a while, the program will scan useless files.

Now, locate and check the Thumbnails option, once done click Ok.
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Now confirm the delete process in the next step by clicking the Delete Files button.

This will clear the thumbnail cache. Its that easy. Enjoy!





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