If it is OK in Safe Mode and blue screens in normal mode it is usually a faulty driver error. Have you installed any new hardware lately that is permanently connected? Maybe a web-cam, printer etc. or have you updated any of the driver software such as graphics, WiFi, blue-tooth or allowed some new Windows update to automatically update your system drivers?
Can you roll back via System Restore to a point where the blue screen stops occurring?
If it is only 5 months old it is still under guarantee and you might want to take it back to where you bought it from.