If the tablet on warranty does not turn on, it must be attributed to the service center. Otherwise, you can try to repair it yourself. To do this, first should be dealt with for the reason that caused the breakdown.
1
Perhaps the tablet just sat down. Try to charge it. Note that with complete discharge, the time must pass before the device can turn on (even being in charge). Sometimes it reaches even 10 minutes. If the network connection does not solve the question, make sure the charger is managed (try connecting another or test this on another tablet).
2
Remember whether the tablet did not receive mechanical damage (or specify the family members). When hit, the display could be damaged (it is subject to replacement, after which the tablet will most likely work again). Confirmation of the mechanical damage to the screen can be the presence of backlight when turned on (but it is optional). Also possible option that the video adapter flew - you will have to change it.
3
If the inclusion occurs in part (after the backlight, the load is constantly displayed, the image of the broken robot is displayed), a software failure occurred. The reason for this may be:
incorrectly installed game, program;
forced completion of the device (the stability of the operating system is violated).
4
You can correct the situation using a rigid reboot by resetting the existing settings (returning factory). But remember that all data is deleted. It is best to find a description of how this procedure is performed for a specific model. Usually you need to do the following:
include tablet;
extract a SIM card, a memory card;
press the volume button (zoom, sometimes - reducing!) Simultaneously with the power button;
hold some time (most often 10 sec.);
when the tablet wrestles, select "Settings", "Format System", "Reset Android" using the volume keys.
5
If a robot with an exclamation mark is displayed during the reboot on the screen, this is a sign that the reboot is incorrectly carried out. Wait until the device is walked and try to execute the procedure otherwise. Or press the shutdown button and hold it a bit. If the robot is without an exclamation mark, and his abdomen is open, you fell into fastboot mode. Using the volume buttons, you need to select "Restart Bootloader", press the power button.
6
Also, the cause of the breakdown can be a hardware failure (failure of the device fillings: something burned, broke). Naturally, diagnose and eliminate the breakdown should be in the service center.
Sometimes to force the tablet only the firmware can work, which should be carried out by an experienced master.
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