Hi Reza,
It is a common set up problem on Quintum that when you enter the IP information the machine then goes into a loop of rebooting.
This is because the subnet and the IP number you have chosen do not match up – this is often due to mis-keying the information (I know, I’ve done it myself more than once!).
To rectify the problem boot the Quintum with a console cable plugged in the front – then press [RETURN] when prompted. You will then be able to reset the parameters.
Hope this helps, if you need any further assistance please feel free to contact me at: mhitchcock@blue-lava.co.uk
Thanks,
Mat