for one time I unchecked the hardware acceleration,it never works again

for one time I unchecked the hardware accelerations,now it never works again on my Nexus 7 2013,I mean it can’t play video when I check the acceleration back on now.it happened in kodi17beta.then I clear both the cache and the data of kodi,still not works.Even if I do clear again and uninstall it and install kodi16.1,the stable one,problem remains.Then I play the same videos in vlc player.it turns out the hardware acceleration works.’cause it won’t get the back of my Nexus 7 hot like the kodi does now.of course,now I know how much the hardware acceleration helps and I messed it up.however,this problem is ridiculous,right?.how can I get it work again,plz.?