XPS 15 screen becomes white
when i switched on my xps15 laptop a white screen appears but my HDD light is blinking. why is this happening. Before 1 month also i got the same problem but when i switch off and on it , it becomes normal. but now for about 2 days i am only getting a white screen. please help me. all my hard work stays in my hard disk. so i need it as soon as possible.