Is there any way I can root this tablet?

Sorry if this question is in the wrong place, since i'm new here. Anyway, I bought an cheap $50 tablet from Walmart. As good as cheap tablets go, it was pretty awesome, until I started running out of space and downloaded Link2SD only to find that my tablet was not rooted. This sucks, and really deprives me of alot of the fun things i've done with my other tablet. I've been trying to root this forever, but, this being a cheap tablet and all, I can't find any roots that support it. Every time I hook the tablet up with USB debugging enabled, even though I have the ADB drive installed, rooting programs can not find it.

Tablet info:
Product manufacturer: ematic
Model Number: EGQ307YW
Android Version: Jellybean 4.2.2

If you need any more info, I don't mind giving it to you, I just really need this thing rooted.

Oh, also,
Methods already tried:
Towel Root
Z4root
Kingoroot
Root with Restore

 

It seemed to work at first, but, I looked down at my tablet and it said Google does not recommend installing this app, so, I put install anyway, and it does so and opens right up, but, then, it closes saying Root Genius has stopped.

 

Thank you! It worked! I'm so happy now!