I got my HP Windows 8 (Consumer) laptop recently and I used Microsoft account to set up this machine for my wife. “Microsoft account" is the new name for what used to be called a "Windows LiveID."
I also applied latest Windows 8 update. After that, I added a user via my Microsoft account with admin right. I could not believe my wife and I got truncatedusername_000 in the user profile as follows:
After 1 day, my wife didn’t like Windows 8 and said she will not use it any more. Therefore, I deleted her account.
I added a new language (Chinese Traditional), changed system locale to Chinese and it caused the reboot. After that, I could not believe I saw the other user login screen. When I clicked ok, it showed the login name – my wife Microsoft account (sun42_000), which was deleted already.
This is a very basic scenario (BVT). I can’t believe Microsoft Windows Team shipped Windows 8 to customers.
After that, I don’t like Windows 8 and I successfully upgraded Windows 8 to Windows 7. (Successfully upgrade Windows 8 to Windows 7 on HP Pavilion G7-2240US and fix the issue of Windows cannot be installed on this disk. The selected disk is of the GPT partition style)