Can't Left click with mouse, works fine otherwise

[wolfman]

Started a week ago, when I couldn't double click to open icons. I could Right click and select open, or use the start menu. But now it is a big deal because I have to download a program for work, but I can't click on the box saying I agree to  the agreement before I do the download. It's a logitech cordless mouse. I've changed the batteries. I've restarted computer. Under device manager, says mouse working properly. I tried system restore. Not sure what to do next. The R click and cursor part work, so I know it's recognized. I had a hard time booting up last week and was hitting alot of the F buttons on top if that helps at all. I'm not real good dealing with bios, registry or safe mode, so you may have to dumb down your explanations, so I can figure it out. Thanks

[Geek-9pm]

First thing is get a regular mouse.
Meanwhile:

Applies to Windows 7
    Open the Use the computer without a mouse or keyboard page by clicking the Start button , clicking Control Panel, clicking Ease of Access, clicking Ease of Access Center, and then clicking Use the computer without a mouse or keyboard.
    Select the options that you want to use: Use On-Screen Keyboard.

Does that help? 

[camerongray]

Have you tried the mouse on another computer, it's probably faulty?