A completed clone can still fail to boot because the PC is starting the wrong drive, the SSD is not detected, or the boot files need repair. Work from reversible checks toward repair.
1. Confirm the hardware is detected
Shut down fully, check the SSD connection, and enter the PC's firmware setup. If the SSD is absent there, Windows repair tools cannot fix the connection.
2. Choose the new drive once
Use the one-time boot menu to select Windows Boot Manager associated with the new SSD. Record the original boot order before changing it.
3. Remove ambiguity
If both drives are installed and you are comfortable accessing them, shut down and temporarily disconnect the old drive. Do not do this on a sealed or unfamiliar laptop; use a technician instead.
4. Read the exact symptom
- SSD absent from firmware: connection, enclosure, slot, or hardware problem.
- BitLocker recovery screen: retrieve and match the recovery key before making more changes.
- No boot device: boot entry or clone layout may be incomplete.
- Windows logo followed by an error: Windows starts loading, so use recovery tools before recloning.
5. Try Startup Repair
Start Windows Recovery Environment, then choose Troubleshoot, Advanced options, and Startup Repair. Use installation media if the PC cannot reach recovery automatically.
6. Reclone only after identifying the cause
If repair fails, reconnect and boot the original drive, verify the source still works, then review whether every required system partition was copied. A new clone should be a deliberate retry, not the first reaction.
Official reference: Microsoft's Windows startup troubleshooting guide.