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Hi Jeffrey, The link below is a YouTube video showing how to fix your tablet, Also there's video's down the right side of the link that may help as well....CHEERS.. How To fix any Android Phone Tablet that won turn on
Is the Kindle a Paper White version, or akin to the original Kindle version? If so, there is no backlight, so no screen brightness adjustment. You'll have to do the screen brightness adjustment like you would for a book.
Your internal memory app partition is gone. The Nobis NBO9 has some serious issues with bad internal memory storage. Yours is undoubtedly unable to download anything from the Store because the operating system *sees* no place to download them to.
Go to Settings > Storage and examine the top horizontal bar graph. It will probably be all one color and the text under it will probably say 00.0 bytes of storage. This means bad internal memory.
You are stuck with a broken tablet unless you can manage to get Nobis, now Bidwell to issue an RMA. Good luck with that as they don't seem to eager to stand behind their defective product.
Usually mobile devices such as smartphones and tablets have built in sensors which by factory are set to adjust brightness depending on lighting conditions on your room in order to preserve battery life.
On android devices you can deactivate this feature going to Settings - Display - Brightness - remove check from "Adapt to lighting conditions"
Tap Settings>Display>General>Brightness, adjust to desired brightness, left or right. Alternatively, from your home page, drag your finger from the top edge of the table screen downward to expose several power button shortcuts (Wifi, GPS, Mute, etc), including the brightness scale, adjust the brightness left or right and/or select the auto[brightness] checkbox.
Go to Settings, Display, Brightness. If you have never accessed Settings, do a finger slide from the edge of the screen where you see the battery indicator symbol, and you should see an option for Settings (or a small symbol at top right that looks like a cog such as you see where the chain connects to the back wheel on a bike). Selecting/touching that will open the full Settings menu. Then scroll down until you see Display, touch that, and then find Brightness and touch that. Then you should see a slider. You should also see an option for Automatic brightness control. Some tablets come with this selected by default. Choosing it will cause the tablet to brighten when outdoors or in a brightly lit room, and to dim automatically when lighting is low. I have never liked it, but it works for a lot of people who are not as picky as me, and can potentially allow your battery to last longer. Good luck and enjoy your tablet!
Another way to adjust the screen brightness is to hold down the Functin key (blue, Fn) and then repeatedly press the up or down arrows (which also show the symbol for screen brightness on the keys in blue.)
Change Screen Brightness Stop the Display Auto Adjusting on iPhone
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