My Windows 10 Pc Asus A52N is not starting ???

[Windows Central Question]

Hi! I have installed windows 10 in my laptop Asus A52N and it worked fine for two months and today i powered on and it show up blue sceen on death "inaccessible boot device" and i wached some videos on YouTube and i created an bootable usb with another windows 10 and it says "irql_unexpected_value" and wont let me install windows again...if someone help me how to fix this or to install back windows.??