A hard drive boot device not found3F0 error occurs when the hard disk does not support the system boot process. During the booting process, the operating system loads into Random Access Memory (RAM). To accomplish this task, a setup process initiates, and Basic Input-Output System (BIOS) takes charge. The BIOS accesses certain files from the bootable device, a.k.a. hard disk. But when the hard drive is not accessible, ‘boot device not found 3F0 error’ pops on the computer screen.
The possible causes of hard drive 3f0 error comprise:
Incorrect boot sequence in the BIOS
Master Boot Record (MBR) or boot sector is damaged
Hard drive connection issue
Corrupt hard drive partitions
Damaged hard drive
1. Perform a Hard Reset
A hard reset re-establishes the connection between BIOS and the hardware. Performing a hard reset is easy and it may fix boot device not found 3F0 error. Follow these steps:
Turn off the computer.
Remove the computer from any docking station and unplug the AC adaptor from the computer.
Ensure no peripheral devices are connected to the computer.
Now press the Power button for 15 seconds to drain out residual charge.
Press the Power button to start the system.
Once the Startup menu appears, use arrow keys to select Start Windows Normally and press Enter.
2. Restore BIOS Default Settings
Sometimes, the system is configured to boot from an unbootable disk. To fix boot device not found 3F0 error, follow these steps:
Press the Power button to start the computer, and immediately after this, repeatedly press the F10 key to enter the BIOS setup menu.
To load and restore BIOS Setup Default settings, press F9 on the BIOS setup menu.
Once loaded, press F10 to Save and Exit.
Select yes, and then press Enter when it says Exit Saving Changes.
Follow the instructions to restart the computer.
3. Reset Hard Drive
There might be some loose connections, and resetting the hard drive may fix the boot device not found error. Follow these steps:
Press the Power button for a few seconds to turn off the computer.
Unplug the power cable.
Now, disconnect and reconnect the hard drive
Reassemble the computer, and restart it, see if it works seamlessly.
If the above-mentioned methods are not working, you should get the help of a repair technician.
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