Laptop operating system not booting
4.5
The laptop powers on but shows "No bootable device found" or "Operating system not found".
Symptoms
- Black screen with text
- Boot device error
- BIOS loop
Possible Causes
- Disconnected hard drive
- Corrupt MBR/GPT
- Wrong boot order
Step-by-Step Fix
1
Check Boot Priority
Ensure the internal SSD/HDD is the first boot device in BIOS.
2
Reseat Storage Drive
Open the laptop and ensure the SSD/HDD is firmly connected.
3
Rebuild Boot Configuration
Use a recovery USB to run "bootrec /rebuildbcd".
When to See a Technician
If the drive isn't visible in BIOS, the hardware has likely failed completely.
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