Another thing that comes to mind. Various services use svchost.exe processes on your system (you'll probably have about 5 or 6) that run in Windows. Now, if you task manager it, and try shutting things down, one by one, until you find out which process it "might" be, you should find it. You might crash your system a bunch, and might get really mad, but it can be done. I would try disconnecting the cd/dvd drive first, just to see if it is for some reason. Gimp, I wish you were in the USA, I LOVE these type of problems. It's like a puzzle. Well, good luck. I will check back after I rewire the kitchen ceiling.
wow sounds like you needed a defrag or it's hung, how many sticks of ram aew in the pc if more than one then try one at a time until problem occurs, unless all is well after the pc is done fraggin err i mean defraggin
if it failed run it again maybe restart first, many reason why it can fail, could even be bad sectors on drive, just added ram could be the culrpit, not all ram is compatible with each other, specs may be the same on 2 sticks but they just won't work well together, i had same problem awhile back, best when adding ram is to buy same brand at same time so you know there isn't going to be conflicts, i would start right at the ram idea take the one out you just added an try it