It sounds like you are using an old install on a new system. This is probably what your problem is. Generally speaking, it's not a good idea to use a windows install from your old system on a new MB, as chipset drivers and such will likely cause conflicts and is probably why it keeps resetting on you. You need to figure out why you can't boot from CD, and run a fresh install on the system.
Alternately, you could boot into safe mode, and try and run the repair utility. That MIGHT fix your problem.