I have a Dell Vostro 430a that stopped video overnight and will not post or respond to any keyboard commands. I replugged everything except CPU (RAM, HD, CD, panel switches, power connectors, monitor, video card). Still no post. Tried with UBCD, no post. Tried disconnecting HD, no post with CD. Tried disconnecting CD, no post with HD. Sounds like the HD is spinning up when I power on, but it doesn't seem to get over the hump into the post.