Required device isn’t connected or cannot be accessed – Windows 8.1
Source:
A month ago i migrate Windows 8.1 from old HDD to SSD. Everything is ok, and bang. OS wont start.
That is a list of what I was doing and how resolved problem.
1. Perform an automatic startup repair
1) Boot from the Windows 10, 8 or 7 USB or DVD bootable media.
2) Click Repair your computer.
3) Click Advanced Options.
4) Click Troubleshoot.
5) Click Startup repair.
6) Follow the onscreen instruction.I tried with Windows 8.1 USB, Windows 10 USB, boot-repair-disk-64bit USB, Windows 8.1 CD, Windows 10 CD and boot-repair-disk-64bit CD. Nothing worked.
2. Perform a startup repair using command:
1) Boot from the Windows 10, 8 or 7 USB or DVD bootable media.
2) Click Repair your computer.
3) Click Advanced Options.
4) Click Troubleshoot and then Command Prompt.
5) Call these commands:
bootrec /fixmbr
bootrec /fixboot
bootrec /rebuildbcd
6) The command fails? Try another suggested commands:
bootrec /scanos
bootrec /rebuildbcd
bootrec /fixmbr
bootrec /fixbootI tried with Windows 8.1 USB, Windows 10 USB, Windows 8.1 CD and Windows 10 CD. Nothing worked.
3. I lost hope. I use SATA adapter to copy all files to another PC(Windows 10) from SSD before install OS. And then Windows 10 show prompt „Scan and Fix”.
I think why not. I press „Scan and Fix”. I put SSD back to PC. And what? OS is started normaly.
It turned out that Windows 10 also has a good power side.