Now when i first started it up, my son hit the button with no ram in it, could that fucked up the bios or something? Also I had the videocard plugged in which is a GeForce GTS 250 512MB 256-bit GDDR3 PCI Express Video Card.
So he just turned it on see if everything would power up? You can try clearing the CMOS. You can check your motherboard's manual to see how to do it. I did this before I booted my first PC after I started everything up and there was no video. Although without RAM, the PC will not boot to the BIOS or OS. Do you have a hard drive?
About the connectors I think your talking about the PCI-Express connectors for the GPU. If not then it might be the ATX connector which goes to the slot/socket close to the CPU socket. Your cables from the PSU should have had some kind of label to indicate which cable/wire is which.
well I think all motherboards have a CMOS battery and pin, but did you check your manual for your motherboard to see what it suggests is the best way to clear the CMOS? Mine which is the ASUS M4A785TD-V EVO, the manual showed that the CMOS should be cleared by removing the pin and placing it back in after 2mins.