If the device is moving slower or freezing you might need more RAM. Use the RAM replacement guide to add more RAM to your computer. Another option to try is a soft reset. When you turn off the power then turn the tablet back on. It also could be a software problem where you need to reset the tablet to factory data, but this will erase all internal storage.

If the device isn't holding a charge there might be a multitude of problems with it. There might be dirt in the power jack. If there is dust or dirt make sure to use pressurized air to blow the dust out of the jack. The power check might be loose or not fit correctly. Make sure the power jack is fit snugly. If it doesn't you might consider replacing the power adapter. It also may be a problem with the battery. Make sure the light to the adaptor is on. If the tablet powers on while it is charging the the battery is faulty. In this case you must replace the battery. A third issue might be there are too many apps or processes running. This could use more charge meaning the battery wont charge. Make sure you shut down the apps to allow the tablet to charge.

If only part of the screen is working it might be a problem with the connections of the digitizer ribbon cables. To fix the problem make sure all the cables are correctly connected to the motherboard. If the problem continues to happen the screen might need to be replaced.