Mar 17, · 1. SSD not booting because of incorrect boot order. If your Windows 10 won’t boot from SSD after upgrading or cloning system hard drive to SSD, it may be because of incorrect boot order. Thus, you need to change the boot mode: 1. Make sure the SSD is connected to your computer. 2. Restart your PC. Mar 28, · However, when I remove the old SSD the system won't boot. The BIOS tells me "Reboot and Select proper Boot device or Insert Boot Media in selected Boot device and press a key". I went into the BIOS and selected by new SSD as the boot device but that didn't help. Then I did some googling.
Shaktim post a comment:
You might try both the Startup Repair and Boot Commands Try the Startup Repair, and if it fails, then go to the Command Prompt and try the BootRec stuff.. If.