Just tried it before even seeing your response. Still got the same message during setup and also during boot-up (five popups), which took considerably longer than usual. Web browser has now slowed to a near-freeze, Skype gets so bogged down that voice breaks up and cannot hang up or close it.
Tries to run chkdsk, computer justs shuts off at around 10-15%. Windows startup repair also cannot complete, machine just shuts off. Can still start Windows normally, but get the above described behaviour.