I have loaded WindowsME into my new AMD2800+,512 MB DDR RAM 400MHz, Samsung 7200 rpm Hard Disk,MSI K8MM-ILSR motherboard system. When I tried to start the OS the computer was automatically switched off. On restart the choice for starting in normal mode, safe mode etc. appeared whichever choice I made the system either froze or switched off the computer. What could be the reason?