Stuck in recovery while doing factory reset Having had problems in the past with battery draining too fast, I was advised to return it to factory settings. On doing this, it worked for a while. 

Now the same problem has started occurring again. So, I thought, I would simply reset again. 

However, I think, I may have pressed the volume down instead of volume up (or vice versa) as now I have a pic of the android and a message warning me not to turn off the tablet for the last 15 minutes. 

Have I done something wrong?
Your device is currently in either:


(Non-Samsung) Fastboot Mode 

or...
(Samsung) Download Mode. 


In this case, because you're not actively transferring files, you should be able to safely reboot it.