Lenovo ThinkPad T400s Service And Troubleshooting Manual page 28

Cannot boot from any
device.
→
→
20
ThinkPad T400s
Device not found (
Device error (
No valid operating system (
Excluded from boot order (
BIOS Setup Utility
1
→
3 →
→
3 →
1 ThinkPad
1
2
4
4
5
)
)
1
ThinkPad
)
)
ThinkPad
ThinkPad