Hi. I have blue screen errors too with ntoskrnl.exe driver power state failure It only happens when going into sleep mode, shutdown works normal Laptop model: samsung np350e5 windows 8.1 (64bit)
I have analyzed your DUMP files and the problem that your DUMP files point toward :- "ew_jubusenum.sys"
This driver is basically related to the Huawei Mobile Connect Software which you might be using.
So, uninstall the software completely and see if the problem gets resolved or not.
Also, you can update the software by downloading it's latest version from here :- ???? - ??????????
but, make sure you first uninstall the program and then install the latest one.