When I try opening eclipse
it opens, but it shows one error i.e Android SDK content Loader has encountered a problem.parseSdkContent failed
Place your android-sdk-windows in the same directory where your eclipse folder is and the name shout be - android-sdk-windows .
Delete the avd file in your .android
and then try to configure your new avd. It worked awesomely.
It may be due to recently added library... In my case i had added two libraries andengine and box2d.. delete them and restart the eclipse and reinstall the libraries ...