Hi guys, during upgrade I did something wrong. So, now I have on screen of my tab logos of pc and mobile with triangle in between. No charging, non responding, no hard reset available. Please, help me!!! Thanks in advance

You may have to do a hard reset.hold power button until tablet switches off....then hold power button together with volume up for at least ten seconds, android logo boots to robot with red triangle.leave it alone until it gives you a menu with options to reset.you will lose all you apps etc but once you sign in to google play you will be able to reinstall all purchases for free.once you have it up and running look for google play updates and chose do not install updates let me choose.this is because if you get a partial update or partial install you will crash the tablet again and again.updates come in the background and you should only update when the tablet is fully charged or connected to charger and never switch one off during installations.hope this helps please vote thankyou.

Hi,
the backn cove is non-removable.

either your battery is shot as in dead or your charger is faulty
you could try to charge it using a usb lead in your computer or another usb port to see if that works , or try another charger to eliminate your lead /charger you are using

Change the battery and try to turn on

you can format your OS and need to delete all application you use on your tab,you can format by go to your nearest hyundai show room

i would go to shop to solve the problem it might be something wrong with it

Have you left it on a while, sometimes on first start it takes a while to innitiate.

Your tablet's battery is probably dead. This may be because you have a bad battery, a bad charger, or a bad charging cable. Try using a different cable first and let it charge for a few hours - even if it doesn't look like it is charging.

If the new cable doesn't do it, try using a different charger. Samsung devices are picky about what charger you use, so try to use one made for your tablet. If you don't have another charger, plug it into a PC's USB port with the PC turned on. Leave them on and plugged in over night. That should trickle charge your tablet.

If neither of those work, try holding down the power and the Volume Up buttons. Keep them both pressed until the Samsung logo/boot screen comes up - should only be a couple seconds. Once the logo comes up release the power button but keep holding the Volume Up button. That will boot you into Recovery Mode. If that comes up, it means you've got power and your tablet isn't broken, but there is something wrong with the Android OS that is keeping your tablet from powering up normally. Use the Volume Up and Down buttons to move the selection highlight to the Factory Reset option. This will wipe all the info off your tablet and put it back into a "brand new just out of the box" state. You'll lose your information on the tablet, but this should fix the boot problem. Press the power button to chose the Factory Reset option. It will take a few minutes. Once it says that it is done, select the Reboot or Restart option. It should reboot. This boot will take longer than normal, since its wiping things out. But not more than a few minutes.

I had this same thing. The Batter image had a red line on the right side and the yellow triangle had an explanation point in the middle.

I searched the net and found a few solutions.

1. Hold the power button down for 30 seconds.

2. Hold the power button down and the volume down button at the same time for 30 seconds.

3. Just let it charge and over night and it should go back to normal.

I did all 3, in the order I wrote them. While in step 3, after about 5 minutes I pressed the power button and it showed that it was charging normal.

Hope this helps.