Not booting properly.

Hello,
i have an Acer notebook Aspire one series Model No. ZG5. I was working with the system suddenly all the programs stop responding. I try to end the task by putting off the computer and when I on the system for about 20minutes, the system could not boot properly as it should. The system will come on and select the booting sequence after that it will return back to the initial point as if you just powered the system. I try formatting the system with the configured usb flash drive, but the system throw up a page saying " window could not start because the following file is missing or corrupt, <windows root>/system32\hal.dil" with that I dont know what exactly to do.