Oh damn. That sounds pretty bad. I hope somebody more knowledgeable drops by, but until then...
(Edit: Implying that I have little idea as to how to correct those problems and I hope somebody else helps instead. Need to sleep more, not making sense.)
What operating system are you running? I'm assuming XP.
Does this happen every time you boot? Since you said it varies on startup, I'm also assuming yes.
Did you try to boot in safe mode? Is your computer on a surge protector? The first error box is the most curious. If the memory can't be read... well, I hope that doesn't mean the RAM is damaged. As for the audio service not starting, maybe that's related to the RAM. Or something on the hard-drive got corrupted?
I've never seen anything like this before. Ack.
Edit: Hahah, Toady. I think one of my friend's kids caused computer damage with a magnet. Well, it was that or the chocolate milk they poured inside.
Edit^3: Oh. I see what you did there.
[ April 01, 2008: Message edited by: Keiseth ]