My tablet will not power up. I have charged it over night and still nothing. I tried different chargers and still nothing. Help!!

Make sure it is fully charged. Hold power button down for about 10 seconds and wait if nothing comes up press power again for half a second. Still nothing? Then put it on charge, it should show that it is charging with a light of a picture on the screen. If there is no sign of charging, wait about 3 hours leave the charger connected and press the power button again for about a second and wait for it to turn on or for the picture to show it is charging appears on the screen, (make sure the charger is on and connected) . Press the power button again for another 5 seconds and wait. sometimes it takes a little while to turn on, especially if the battery is very flat. Other things to try are check the charger on another device e.g. another table or a phone if you can and try another charger on the tablet if they are compatible, (usually the same plug is o.k, check the voltage is the same. most chargers are USB 5v). It may need a more powerful charger than most small phones,. you can try plugging the USB cable into a car charger or USB 3.0 port on a computer. 2 amps is common for most tablets. Apple may be different, hard to be exact without knowing brand etc.
If all else fails see the retailer

Turned off the tablet, unplugged the charger and kept the tablet off for about 30 minute to one hour, plugged in back the charger, then turn on the tablet. After that I you might see the tablet started charging. Good Luck.

Allow the charger to charge the battery with the tablet OFF over night. The tablet requires MORE power than the charger can provide - but the charger provides enough power to slow charge the battery. In the morning it should be fine - unless the battery no longer can support a charge.

Try a different charger. The tiny wires in charging cables are delicate and break easily. You may have had the tablet connected to the charger and nothing was happening and you ran the battery till it was dead.

Try getting a different cord and see if there's any difference.

Make sure your using the original charger which you got with your tablet.

Check out these links for more info
http://lifehacker.com/does-it-matter-which-charger-i-use-922783980

http://www.gizmodo.in/indiamodo/Why-Your-Phone-Might-Be-Taking-Too-Long-To-Charge-And-Tips-to-Take-Care-of-Your-Battery/articleshow/28281500.cms

check battery ,if ok then reset ,with reset button,,,other wise, expert professional

Try a different charger first, as it maybe faulty. If not the battery maybe faulty and I would purchase a new one.

hold the power button down for 10-15 seconds to force a power off. When turning back on, hold the power button down until you either feel it vibrate or something comes up on the screen.

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.