tried to get sketches-messed up my computer

I was using google-searched for sketches on arduino and ended up installing AVR which displaced google.
Must I go to a Microsoft tech to repair?
I have already tried restoring windows to last weeks condition.
I turn to you folks hoping for kindly advise.

Huh?

Google has been displaced? Better let NSA know.

Thanks guys for putting up with me. Explanation:
I’m new to win 7. Find it has hidden several features like how to select my browser or use defrag.
My “computer fixer” wants to have me use his “expertise” for such stuff. I’ll go looking for Dummies book for Win 7.

If your "computer fixer" is unwanted window with many warnings, your computer is infected by malware!

Donduino:
I'm new to win 7. Find it has hidden several features like how to select my browser

Control Panel \ Programs \ Default Programs \ Set Default Programs

or use defrag.

Ctrl+Esc. Type "defrag".

My "computer fixer" wants to have me use his "expertise" for such stuff.

I'll send a bill. :wink:

If your "computer fixer" has convinced you to install extra things, particularly ones that give him/her control over your PC, you are in big trouble. Better re-install the operating system.