Mikrotik Server PC Restarts Automatically !!

I have Mikrotik Server 2.9.27 on Dell Machine , Processor 1.3 , 512 of RAM

I’ve checked every single peace in my PC , and it works perfect
but the Mikrotik Server restarts automatically and it asks for login and password

I put them and " Terminal Linux detected using multiline input mode " then connection comes back and it works fine for a while then it restarts again .. over and over


so please help me because its driving me crazy !!

Thanks a Lot

c}{e

http://forum.mikrotik.com/t/my-mikrotik-pc-server-restarts-automatically/31053/1