iator is OK.
-The most direct method is to send to professional repair store.
Here’re the causes which may lead to the problem:
-Power
Supposing the voltage there is not stable or your power quality is not good or broken, then it may happen.
-Overheating
Bad thermal performance and most symptom is restart. You could try installing machine temperature test software, if temperature is too high, then it would give prompting. And the places where the temperature is too high are primarily on graphic card, south bridge chip and CPU.
-RAM
Have you added a memory stick after you bought the machine? If the compatibility between memory and motherboard is not that good, the problem would also occur. Or the memory quality is too bad, the two memory sticks are different, compatible problem occurs.
If the laptop auto shut down when copying files, then it’s might be the problem of south bridge chip, hope this could help!