Hello. I have just installed a new motherboard in my HP PC. The motherboard is a ASUS P5LD2-VM-UAYGZ. I have also put in a new video card, an ATI Radeon x800 GTO. When I first turned on my computer, it showed pictures. However I was having a lot of problems (Which I'll go into, because I need help with them as well, later). After a long time, I finally got it to do something, it went to a screen where I had to put in the CD I got with the motherboard so it could install something. When it was done, it told me to shut off my computer, which I did. Now, when I turn it back on, the monitor doesn't get a signal. I've tried another monitor on my computer as well, but that's not getting a signal either.
Please, help. Thanks.