Answer to "The laptop has no power either the ac adaptor"My theory: That sounds like a problem with power delivery on your tablet/laptops motherboard. Ruling out the adapter: If the Adapter Light comes on this typically means that the adapter is properly converting AC (from your wall) voltages to the desired DC voltage. If you have a multi meter you can always check that you are getting the proper voltages. These can be seen on the adapter itself. Or if you have a spare adapter check to see if the same symptoms happen. If they do the adapters are working properly. What might be occurring on your laptop: If your laptop is off and has no power, and you try to connect the adapter. The light on the adapter will go out when you connect it/ try turning the laptop on. The laptop has a failed component that is making it draw to much voltage, which in turn will trigger the tablet/laptops auto off feature to prevent further damage to the components. So this will prevent your battery from charging and allowing your device to turn on. What you can do: 1. If you have a spare...
Answer to "Connect USB phone is reconized"Windows Instruction: 1.) Connect the phone to the computer with the device screen off. 2.) Unlock the device and pull down the notifications if no charging notification pops up. 3.) There will be a notification titled similar to "USB charging". Tap it. 4.) Change to Transfer Files.