1-check battery using multimeter (voltage should be around 3.8~3.7 on DCV range) 2-if battery is not as mentioned above connect it to a power supply rated at 3.8v (+to+ & -to-) for about 1 min then measure its voltage again. 3-if battery voltage increased then it is ok and accepting charging but it was flat dead. 4-if not then battery is damaged and need replacement. you can also try another procedure as follows: 1-plug your charger in wall outlet, don't connect its usb to your phone yet. 2-press and hold power button 3-while like that....plug in charger usb to phone socket 4-release power button on sight of starting screen

Try this, #plug your charger in wall outlet, don't connect its usb to your phone yet. (1) press and hold power button (2) while like that....plug in charger usb to phone socket (3) release power button on sight of starting screen

spray some WD-40 at joint and wait for sometime then try again.

most likely it is a connector issue which makes bad contact between digitizer connector and board socket, try to clean both with a cleaning petrol and a toothbrush, dry then try.

did you try to start it up again after giving it some time to cool down?...my guess is "the cpu cooling heat sink fins are blocked by a mix of hair\lint\dust" so you'll need to tear it down and clean it properly then reassemble it back again and attach it to the cpu using a fresh new thermal paste...don't put too much just use a thin lines shaped as X shape on top of your cpu.

Most likely battery is worn out and needs replacement.

Hey Kat... i guess a video will be far better assistance just like that one. https://www.youtube.com/watch?v=27azAfFh... but you have to google the right model.

sorry to hear that, but i recommend that you get help through a pro on that, he'll be a far better help than any advice or repairing steps told to you over here, this kind of work needs a lot of visual inspections and tests, try to find a friend or so.

it's obvious, The connector inside is disconnected from mobo and needs soldering.

1st) check device manager & make sure sound device is OK. 2nd) follow this: 1. Right click speaker icon (right hand corner) 2. Select Playback devices 3. Right click Speakers 4. Enable it and set as Default 5. Click Apply/Ok