Welcome to Seven Forums Cindylo. Power off, remove all but one stick of RAM and disconnect all drive, we are seeing if you can enter BIOS and load default settings. If so, reconnect it all but leave only one RAM stick in and see if the boot will finish.
Sometimes a fresh install is needed when you change a motherboard though. Try tapping F8 during start up and get to Advanced options and try this first:
Repair Install