"Keys are not responding when I press down."に関する回答The keys you keyboard may not be working do something such as food or gunk stuck in the keys, you should check and see if this is the problem before trying anything else. If this wasn't the problem you may have just worn out the keys, which will break after a while. The best way to repair this is to probably to find replacement keys and replacing them, however if it is the entire keyboard, you may have a more detailed problem.
"Why does my computer shut off when it gets warm?"に関する回答Hey, Your computer may be experiencing problems on the physical side such as your fan not functioning properly, this may be the cause. The fan that cools the computer might be malfunctioning, so it would be ideal to take it out and try to clean it, if that doesn't work you may need to replace the heat-sink/fan unit.
"Why won't my device charge when it is plugged in?"に関する回答Hi, the one of the most common problems with laptops is that the battery will slowly lose its charge. This happens because batteries lose charge every-time they are re-charged. Unfortunately the only way to fix this is to obtain a new battery and replace it.