Hmmm... Assuming the speaker works, is no beep an official error code? When I put my DVD drive on an other Marvell port, the HDD led thing is fixed. I've connected it in the same way as before, when it was permanently on. The other Marvell port is not broken, because the system booted from CD (was still in the drive) the first time I started it with that port being used by the DVD drive.
Actually, on the first Marvell port the LED also works normally. But only during boot up, when it gets in windows, it stays on forever. Something with the DVD drive not liking Marvell port one or the other way around? Maybe the combination with RAID0 on the intel controlled ports.... Hmmm, sure is interesting!
If the system has proven to be stable with this new memory, I think I'll just leave it there. But still, I'm annoyed by this speaker not working like before. It sure is puzzling...