Please provide the model of your laptop and operating system. If you are receiving an error message, please tell me the exact error you see when you try to boot the system.
My laptop is 7537 and i bought it at china
i can not get any report,
when i reboot shows UNMOUNTABLE_BOOT_VOLUME
and i have fall it down to floor ,maybe 50cm high
Yes, Dell sells hard drives for your laptop. I cannot provide pricing information but you should be able to locate the replacement drive easily from the main support site.