Can you boot to CWM? (VOL DOWN + POWER for 12-15 seconds, release when you see white text and tap VOL UP)
If you can get into CWM, your laptop should be able to see the tablet for ADB.
If not, hold VOL UP and tap the POWER button. May need to hold both if you are boot looping (I have never tried) and see if your laptop recognizes it for ADB.
I would also suggest trying PERI if you have not done so already. This will push a good version of CWM, then you just need to push a ROM via ADB and then flash it.