I installed all the software (Windows XP etc...)on my hard drive with an MSI 6558 MOBO and a celeron 2.4GHZ cpu. I moved it to a dell dimension with a Pentium 2.0GHZ socket 478 CPU. When I start the PC it will not boot up. In fact it just keeps restarting. I can get it into the setup screen and it gives me the option of booting in safe mode, Prompt mode etc... but it doesn't matter which one I choose it just rstarts. Any suggetions...