Laptop keeps off shutting off!!! I honestly don't know what do do now my Acer Aspire 5733z-4851 it randomly shuts off at times when in use and when left in idle. I have tried replacing the battery which worked for around the same amount of time the other battery did. After this I took out the battery and just left in it plugged in with no battery in just to check if both of the batteries are faulty and no It just did the same thing. I have read other threads that say over heating could be the problem, but it feels normal. Please Help!!