Trio Quad Core Tablet will not charge

has it got an aeroplane mode in the settings that might be on ?

or a manual switch that might put it in aeroplane mode.

Try another sd card to see if the problem lies with your original card or the tablet itself.

Interesting - possible that it is not low enough on charge for the charger to operate?

Is the charger working and connected properly to wall outlet?

yes its compatiable

This is an indication of limited RAM left, usually below 200MB. There are too many apps running in the background or an application consumes too much of the RAM. Use a Cleaner application to clear unnecessary cache which is normally the main culprit. ES Task Manager can do a pretty good job for this.

connect it to your computer with usb cable and copy files to your computer it should ask you when connect it what you wanna do or you can use my computer or start menu to browse the tablet and select files to copy to the harddrive

YOU DON'T KNOW OUR PASSWORD? OR IT WON'T TAKE IT?NEED MORE INFO

YOU PUT YOUR PASSWORD IN OR YOU FORGOT IT ?OU MAY HAVE TO TOTALLY RESET ..USAUALLY PUSH VOLUME CONTROL AND ON BUTTON AT SAME TIME TO GET TO RESET MENU

Battery replacement is possible. The battery is a flat component encased in a shiny silvery sheath behind the speaker area inside the back cover. It's mounted with double-sided (very) sticky-tape. A replacemnent battery should be sourced, having the same power specifications as well as physical dimensions. (see detailed close-up photo attached.) Replacement involves desoldering the 2 terminal wires (1 red and 1 black) which attach it to the main board, and replacing the battery with a new(er) unit.
The above having been said,I'd only replace the tablet battery if I was sure that it's the battery at fault. Here's what I'd suggest.
First, check that you're using a charger with the proper 5 Volt / 2Amp (2000milliamp) output. Also I'd suggest you use a charger designed to be plugged intothe G2 7" Dual-Core tablet's dedicated charging port. (See sample tablet charger in attached photo) The G2 tablets WILL typically accept charging output via the micro USB port, for example, from a typical cell phone charger. However typical phone chargers which will happily attach to the Trio or other similar tablets, via the micro-USB port do NOT often have the same output power specifications. This I think may cause difficulty with the tablet battery not reaching the fully-charged status. Also, the use of the USB port for charging may cause access problems if the battery power is low during some operations (eg data transfer in slave mode), as the charging port can not multitask as the USB port can. If power to the main boad is lost during such operations the tablet may become "bricked". Bottom line for me would be to use the dedicated appropriately rated charger whenever possible: it's the reccommended charging method.

You have to replace its battery its damaged