I dug out an old Vaio today and defragged drive c-colon. I set about downloading 10 only to find it took half of eternity to load and is now taking the other half to check for updates. Well over an our and still on 0%.
First time around I pulled the plug on it. Literally. I almost gave up on an earlier stage, but suddenly it went into the update check thing so was hesitant to give up too early, but I've loaded all brands of DOS and Windows and never encountered delays like this.
The computer is dual boot. Could that be a problem? Can't see why as it's responding normally in every other way.