You are not logged into Win7 as an administrator you should consider doing this as running a web server requires some functions to be run as an administrator not as an ordinary user,.
So when you start the CP3 right click on it and select to Run as Administrator and that will help eliminate one issue.
You have Windows Services for Apache and MySQL installed and will show as green ticks in the CP3.
Try stopping Apache and MySQL then click on the ticks to uninstall the services.
When you see the ticks grayed out then start Apache and MySQL again so we have a clean log file with no issues.
Your path issues could be caused by the upper case Geek - Apache and most things in XAMPP are case sensitive and it is advisable to keep to all lowercase names where possible.
Try rename that folder and adjust any paths that may show Geeks in uppercase to lowercase.
When you have started Apache and MySQL and there are no issues in the log window go to
http://localhost and you should see the orange XAMPP Welcome page.
Exercise all the demos to test your XAMPP installation is working good so we have a clean base to start from.
Also you could try accessing your Joomla site using
http://127.0.0.1/Geeks or
http://127.0.0.1/geeks if you changed to lowercase file names - let me know if 127.0.0.1 works and not localhost.
Good luck.