i updated my computer and now it says files that are needed to run windows properly were replaced by theses unrecognized files to make sure windows runs stable please insert your disc now but i dont have a windows disc and of i press cancel it says are you sure windows migh become unstable to you wish to cancel............i dont know if it is a problem or what but i was just wondering

How did you update your computer?

Was XP pre installed on your computer?

If so what is the make and model?

Did not the manufacturer provide you with any recovery disks?