iMessage not working on MacBook Pro Retina
My iMessage stopped working on my MacBook!
Details: new to the mac world (former PC) and still getting used to all the wonderful features of being part of the mac-family! One of my favorites is iMessage. It instantly began working upon opening my new Mac and signing into my account. It was great, the clouds parted and I saw angels! Really, it takes that little to impress me. And then it all went away....and it has been raining and grey in my world ever since. I've gone to the forums and tried signing in and out of my account on iMessage. I've deleted files found in ~/Library/Preferences. I've even said a little prayer. But I miss it, and I want it back, desperately.
Max OS X 10.9.4
I don't know if I've given all of the information needed, but PLEASE, help me! And, thanks in advance for any help!
MacBook Pro with Retina display, Mac OS X (10.7.5), Max OS X 10.9.4