Ok so i have been having problems with my laptop about my screen turning black or blue when it goes to sleep mode for 30+ mins. when i get it i close my laptop until the fans stop spinning and open it again. then the normal stuff come up ( windows logon screen ) and then it works normally
Ofcourse, its because you have put it to sleep for more than 30 minutes.
Make sure you have all the latest drivers. If blue screen comes again, there should be a misunderstanding between your hardware and software.