Need help with a bush10onu tablet. Fully charged won't turn on

I'm thinking your battery is dead.
It may say it's fully charged but I'm betting its not

 

How long ago was this tablet stolen from you? It could be a matter of the thief just abused it and ran the battery down repeatedly, shortening its longevity significantly. Also, how long was battery able to hold a usable charge when you had it previously? Keep in mind any tablet's battery will age and lose it's ability to hold a charge. If your tablet is only usable only while plugged into it power adapter, than it does sound like the battery is failing.
The problem is you don't know how this tablet was maintained for the time when you didn't have it any longer.
You might want to do a Factory Reset if you haven't already, just to give it a cursory clean-up. You don't know how the a-hole treated your tablet physically nor what they might have left behind.

 

Get a cheap USB Battery Doctor and it will help you diagnose this problem.

https://www.google.com/search?q=usb...ved=0ahUKEwi3lfav0JTsAhWHWM0KHbC3AQ4Q_AUICCgB

 

http://www.bush-support.com/tablets
OK, after reading through your initial post I wasn't able determine that this tablet actually doesn't boot up normally.
With a lot of Android mobile devices, re-flashing the appropriate stock ROM will restore them to working condition. But the Argos site, and the Bush site, show little online tech support and your model doesn't appear to have adequate third-party, independent tech support either. You might want to try contacting Argos and/or Bush to see if they will repair it for you. Get a quote though, you might be better off just buying a replacement instead. It might not be just a software issue, if there's hardware damage too you'll be paying more for parts and labor than the cost of buying a new, more functional tablet.

 

that is what he was saying both argos and bush do not offer much support:

your only real solution is to contact the manufacturer and see if they can repair the device for you.

 

It will tell you the battery level from the charger's standpoint. High / Low amperage indicates battery low / full respectively.

Have you tried cleaing the battery terminals both on the battery and in the device with a pencil eraser? You may have continuity problems.

 

In order to flash your tablet, you need to obtain an appropriate ROM, one that's created specifically for your model, and a utility to do the actual flashing process. Some tablet models, often Samsung models, are easier to do this. There are numerous sources online for stock Samsung ROMs and flashing utilities for Samsung devices, but for a lot of other brands, those items may or may not be as prevalent.
The issue is there is no such thing as a generic, universal Android ROM that can be used on any Android-compatible device -- every device has its own, specific ROM. Every different model has its own unique hardware configuration and every matching ROM contains the drivers, firmware, and software that directly corresponds to that hardware. So you won't be able to just use any ROM you download from some repository, you need to get one that exactly matches your brand and model.
So with your Bush tablet, if the manufacturer doesn't opt to make ROMs for their products publicly available (a lot of them choose not to), that limits your options. Since it still needs to be determined if this is a software or a hardware issue, don't get your hopes up too much.

 

Your battery is dead

 

that battery looks sketchy......i definitely would not plug that thing in again.

so the only i thing i found was this chinese(i think) website:
http://mlnstar.com/index_37.htm

its list the GSP3180116 which i believe is the battery model number. not sure how to order it though as i can't read the web page.

 

cool, keep us posted if you do end up getting a battery