I have an older computer the OS was XP Pro if that matters. the last thing i did to it was take out the flopppy drive. It was working fine but then all of a sudden it stopped booting up. I also had the computer on for a while than i usually do, i had a fan problem in the past and replaced that i dont think the fan is bad again, but when i go to boot it up it seems like it starts booting up but then there is no signal to the monitor and i checked numerous times that everything is plugged in correctly and it is, is there something wrong with my motherboard?