How to stop/cancel factory test procedure?

[mikkihiiri]

I have a Lenovo IdeaTab A1000 with Android 4.1.2. System update was available and started it. After a few minutes screen was black and thought update was finished. By mistake pressed the volume button when picking up the pad and it started some short of a factory test procedure. In a first test screen was filled by circles which I was able reset one by one, next test followed, and an other one... I can't finish the tests. How to stop the test procedure? I tried to press power and volume buttons again, but no success. Should I wait until the battery is flat... Thanks for help.

 

[Rukbat]

Unfortunately if you can't power it off, that's about your only choice in a device you can't remove the battery from.

 

[lunatic59]

In a device that has no removable battery, you can usually power it off by holding the power button for 10 to 20 seconds. Try that and then reboot.

 

[Thom]

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