How do I fix my tablet if its stuck I On Japanese and making a weird sound

If you are sure that your headphones are not the problem, then there must be a software/hardware issue with the tablet itself. ... By restoring your device, you make sure there is no software issue with your device. If the sound still does not work, try replacing your audio jack.
I looked everywhere for an answer and tried it ALL, from cleaning the jack port, reboot, restore to fabric options, and many more, but none of them worked. However, as I was trying not to go crazy trying so many weird things on my new not properly working tablet, I accidentally found the solution!!! why it works I don't know, but it does so here it goes:
1. Turn device off
2. Make sure your headphones are plugged ALL the way in (you should hear a click sound)
3. Press the on/off button and the volume up button at the SAME TIME
4. Once the screen is on let the on/off button go
5. DO NOT let the volume up button go
6. Wait until the tablet has finished loading all settings up.
7. Let volume up button go.
Problem should be fixed now. Enjoy

Call Tablet support Toll-free number 1-888-687-4491 USA and find instant help and support by experts technician. The technician available 24*7 for you.

I looked everywhere for an answer and tried it ALL, from cleaning the jack port, reboot, restore to fabric options, and many more, but none of them worked. However, as I was trying not to go crazy trying so many weird things on my new not properly working tablet, I accidentally found the solution!!! why it works I don't know, but it does so here it goes:
1. Turn device off
2. Make sure your headphones are plugged ALL the way in (you should hear a click sound)
3. Press the on/off button and the volume up button at the SAME TIME
4. Once the screen is on let the on/off button go
5. DO NOT let the volume up button go
6. Wait until the tablet has finished loading all settings up.
7. Let volume up button go.
THIS IS WHAT I HAVE JUST FOUND ON THE ENTERNET BUT THIS IS NOT TO SAY IT WILL WORK FOR YOU.SO PLEASE THINK ABOUT WHAT ITS SAYING BEFORE YOU TRY IT.
I DONT WANT YOU TO MESS UP YOURS...IF YOU DONT WANT TO TRY THIS THEN I WOULD SAY LOOK AROUND THE ENTERNET FIRST JUST TO MAKE SURE.

Hi Anonymous, The link below is a youtube video showing you how to fix your tablet, There's video's down the right side you can check out as well....CHEERS..
https://www.youtube.com/watch?v=0PAB6khykWE
How To fix any Android Phone Tablet that won turn on

Not sure about Dopo but my Surface tablet has this problem at times and the solution is to press the start button at the same time as holding down the volume button. Hold for 10 seconds. Sounds weird but may be worth a try.

You can likely free the power button by getting in the crevices (long nails work great) and pulling the power button out, or clearing contaminants. Additionally, you might have to access your hard drive through a computer and delete some app data or pictures to free memory and solve the freezing problem.

Any weard sounds? What software it use? had it been damaged mecfanikaly? after what event it started to do this?
Basicaly nead more info

you have to get a new charger or have to lift it up

Same here this sounds weird but you have to hit the screen with the pen.. in the long run it probably hurts the pc, but it fixes the problem.

Whatever happened? Fixed? still not up? Trashed?