Many have wondered if Microsoft used the same desktop Windows Kernel on the Windows Phone 8. The answer is yes as indicated by this tweeted photo of the error screen:

Microsoft says ‘normally’ users should never see this error and therefore don’t have to try to figure out just how to insert an install CD into their phones. It seems this particular person was trying to flash their phone when something went horribly wrong. This also serves as an example of how to ‘brick’ your phone. No indication is Microsoft was going to offer any support, other than may be have the user send the phone back to them.

via Tom’s Hardware