Asus laptop is not detecting the hard disk, it could indicate a hardware or software issue. Ensure that the hard drive is properly connected to the laptop. If your laptop has removable panels, you may need to open them to access the hard drive. Make sure the connectors are secure and not loose. If you are not comfortable doing this, it is advised to take your laptop to a professional technician. Once in the BIOS, navigate to the "Boot" or "Storage" section and check if the hard drive is recognized. If not, try resetting the BIOS settings to the default values by selecting the "Load Default" or "Optimized Defaults". Some laptop manufacturers provide diagnostics tools that can be used to check the health of the hard drive. You can check the Asus support website for any available diagnostic tools specifically designed for your laptop model. Running a diagnostic test can help identify any hardware issues with the hard drive. it is recommended to contact Asus support or consult a professional technician for further assistance as there might be a hardware problem with the hard drive