Motherboard booting problem

Yesterday I built my first computer and I turned it on, went into BIOS and set it to boot from optical drive. I then restarted the computer and it would just sit at the motherboard screen(the one that says "MSI Platinum...." and it wouldn't boot to my Vista cd. I kept on messing around with it and then after about the 5th time restarting my pc it booted up. I installed Windows Vista and everything was fine. I even restarted it a few more times and Vista would start right up(I had to change the BIOS to harddrive of course).

So then I had to move my pc to my office and when I had it all hooked up and ready to go, I turn it on and...nothing. It just stays at the motherboard screen saying "Press F1 to POST or del to BIOS" and thats it. It won't boot from the hard drive or do anything at all. But before I had moved it it would go to the motherboard screen and then jump right to booting up Windows and now it won't.

So I got mad at it last night and decided to go to sleep and when I woke up I decided to open the case and make sure everything was connected and then I turned it on and what do you know! It booted up Windows and so to test it I restarted the pc and....nothing again, just the motherboard screen.

Now there are some error lights on my motherboard and the lights go red, green, red, red and the manual says that is the keyboard driver initializer, would the fact that my keyboard is ancient have anything to do with this random booting problem?

I'm not that good with computers, so this may be an easy fix and I just don't know how to do it, so if anyone could help that would be great.