How to reverse change how open .dll files?

How to reverse change how open .dll files? I changed accidentally, trying to open only ONE file, most of them to open with Microsoft Picture It! software and now some things do not load, and my USB ports are completely useless!  Help. How to reverse this mess? OR should I simply delete all these and download replacements? A lot of new files that I downloaded automatically changes in Pic! icons, once that they finish downloading... - and I cannot restore, because he says that nothing has changed.

Thank you!

Hello

I suggest you follow the steps mentioned below.

Method 1:

I suggest running the fix that is present in the link mentioned below and check if the problem is resolved.

How to change or choose the program that starts when you double-click a file in Windows XP

http://support.Microsoft.com/kb/307859

Method 2:

If the problem started recently, so, I suggest you do a system restore and see if the problem is resolved. Follow the steps mentioned in the article below.

How to restore Windows XP to a previous state

http://support.Microsoft.com/kb/306084

Thanks and regards.

Thahaseena M
Microsoft Answers Support Engineer.

Tags: Windows

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