Window photo editing vanished ~ how do I find it again?

I have always been able to open photograph editing in the top command bar when I opened a photograph on my computer. This month, the only changes I made on my Windows 7 computer were the installation of Microsoft Office Home Edition 2010. However, I downloaded photographs, opened them, and was unable to edit, such as compressing the photograph; changing brightness, contrast, or saturation of colors; or cropping. Please advise me on how I can obtain these editing features again when I view my photographs. I appreciate any assistance.

When I did a search for Microsoft Office Photo Editor, it opened and asked me to make shortcuts to photographs, which I did not want to do for all of my photographs. The computer made 64 shortcuts, then locked-up my computer. Also, the program assigned a bunch of long, non-sense names to the photographs that it made into shortcuts that are worthless for organizing my photographs on the computer. All I want to be able to do is open photographs from existing files and run simple editing.