General :: Samsung Galaxy Tab P3100 - Can't Put Outside Link?

i've just rooted my samsung galaxy tab 2 - GTP3100 by following this video at youtube, since i cant put outside link

it's on the first video list when you type "how to root galaxy tab 2" this video is made by droidcheats

Then i pressed volume up + power button and ended backing up my device on internal sd card wrongly. Now my phone working very very slow because of memory low.

I've tried to deleted the back up by pressing volume up + power and then deleted the files in "back up and restore"

but my device still low on memory, i tried to reset it few times and suddenly it goes on black screen

my tablet still able to finished load samsung logo and still looked fine on homescreen but after i slide it to unlock, the black screen is occurred

i still can access settings, home and back button specially when i access settings, i can't do anything like formating device or deleting applications

i've tried to restore factory settings using clockworkmode by pressing home button and volume up it worked. but when i try to restored my previous back up data, the black screen re occurred.

what should i do? if i can't fix this problem and will have to reset on factory settings, is there any application to read the back up data? since i backed up it on external sd card probably if i can read the data, i could restore some important data.