Hi. Have you tried resetting the unit? Resetting your Kindle Fire can solve intermittent problems. To reset your device: Make sure your device is disconnected from any power source. Press in the power switch and hold it there for 20 seconds. The screen should turn off, once the screen is fully turned off press the power button in for 2 seconds and release. The device will turn back on and you will see the Kindle Fire loading screen. This reset will not affect any books or content you have on the Kindle.
Hi. You should take the phone to a repair center asap (Today) and get it treated for water damage. Do not turn on the phone. The quicker you do this the more likely you are to save the phone. If you have phone insurance, then now would be a good time to use it. If you wait too long, then the phone may end up beyond repair. Don't be tempted to use the mythical "Bag of rice" method as this doesn't remove the harmful deposits from the electronics inside the phone. Trying to power on the phone will cause more deposits to build up from the liquid and hence more damage. Good luck.
Hi. Disconnect the charger. Now take out the battery and plug the charger back in. See if the laptop will now boot from the charger. If it does, then you need to buy a new battery. Don't run the laptop for too long from just the charger as it can damage the charger.
Hi. Try a different USB port on the PC or even a different PC if you have no luck with GD Solutions answer. If the phone was disassembled, go back and check your Dock to logic board connector is seated properly. I.e, disconnect it and re-attach it. You can try it with the PC again without having to put the back cover screws back in. If still no joy, another thing to try is putting the phone into DFU mode. In DFU mode the screen is blank and the device appears to be off, but iTunes detects it as an "iBoot recovery device" or similar and it can be restored in iTunes. To get into DFU mode: 1) Connect the USB cable with the device powered on. 2) Hold Home+Power until the device resets (about 10 seconds) 3) As soon as the screen goes blank, release Power and continue to hold Home. You have to be really quick about releasing power. If you did it right, the device should appear to be off (no Apple logo appears), but iTunes will ask you to restore.