What you’re seeing
- The restored server shows a blue screen with stop code INACCESSIBLE_BOOT_DEVICE seconds after Windows starts loading.
- Alternatively, the new machine reports "No bootable device" or drops into the firmware setup screen.
- The restore job itself reported success with no errors.
- The original server used different storage controllers, RAID cards or legacy BIOS boot.
Common causes
Every environment is different, but these are the causes our engineers find most often:
- Windows lacks the storage controller driver for the new hardware's RAID card, NVMe or SATA mode.
- The original server booted in legacy BIOS mode while the new hardware expects UEFI, or the reverse.
- The boot partition or boot configuration was not restored correctly to the new disk layout.
- The new RAID volume was not set as the boot device in the server firmware.
- Hardware-specific vendor software from the old server loads at startup and conflicts with the new hardware.
Why it matters
This error usually appears during the worst possible moment: you are already down because the original server failed, and the restore was supposed to end the outage. Each failed boot extends the downtime for everyone who relies on that server for files, applications or email. Without a tested plan for restoring to different hardware, the recovery time the business assumed may turn out to be days instead of hours.
How AskTechGurus fixes it
Skip the trial and error. A certified engineer works on your actual system, finds the root cause, and fixes it properly.
Tell us what’s happening
Submit a ticket in about two minutes. Paste the error, describe what changed, and pick your tier. No charge to submit.
A certified engineer diagnoses it
A vetted, US-based systems engineer claims your ticket, usually within minutes during business hours, and investigates over a secure remote session you can watch and end at any time.
Fixed and verified with you
The engineer resolves the root cause and confirms with you that it’s working. You don’t just get a workaround, and you get a plain-English summary of what was wrong.
Pay only when it’s resolved
Fixed price from $99, invoiced only after you approve the fix. If it isn’t resolved, you don’t pay.
Frequently asked questions
Is the backup bad?
Usually not. The backup typically contains everything, but Windows needs the right drivers and boot setup to start on hardware it has never seen.
Can you help while we are down?
Yes. Our certified US engineers can work with you in a remote secure session, starting from $99, and you pay only when the server is resolved.