This post is more than 5 years old

2 Posts

85984

February 17th, 2014 13:00

""Reboot and select proper boot device" after BIOS upgrade to A14 (Alienware X51)

Hi,

I upgraded to the BIOS firmware version A14 today and after rebooting the system won't boot. The error says:

"Reboot and select proper boot device".

I can see the drive in the BIOS, the default drive mode is Legacy. If I switch to UEFI i still cant access windows.

However, using UEFI i can go into PSA and the diagnostics return error 2000-0142. Short selft test unsuccessful.

Do you have any ideas how to fix this? I'm sure the drive is fine and this is more of a problem related with the BIOS update.

Thanks.

OS: Win 8 64bits

PC: Alienware X51 R1

2 Posts

February 18th, 2014 10:00

Using a system recovery USB I managed to recover the system in UEFI mode. In legacy mode I couldn't read the windows partition and it said something about the drive being locked. 

Everything seems to be working fine again. I ran diagnostics the drive passed all the tests too.

For future reference I should mention I upgraded from A07 to A14.

8 Posts

April 6th, 2016 16:00

I know that I am replying to a 2 year old thread, but wanted to add this in case anyone else comes across the issue. I just upgraded the BIOS on my R2 and it turned out that it was that the new BIOS defaulted to legacy mode instead of UEFI for the boot mode. I was running Windows 10 and switching to UEFI fixed the issue.

8 Wizard

 • 

17.1K Posts

February 17th, 2014 14:00

Well, HDD (and even SDD) can die at any moment.

At this point ... I think I would drop in a spare drive ... to help see what's up with the motherboard.

Will also allow you to do extreme things to system without worrying about messing up your current software build. Hopefully you have a backup.

8 Wizard

 • 

17.1K Posts

February 18th, 2014 14:00

Good to hear you sorted it out.

- Did you just use the System Recovery USB flash drive to start the machine or did you end-up having to rewrite the HDD with a default software load?

February 19th, 2014 09:00

It could have been the secure boot or the boot mode changed. Probably it was on AHCI and the update set it to RAID or backwards. It always happens because the default settings are different between BIOS's

December 6th, 2016 07:00

Thank you so much for posting this information! You just saved my a $$ big time.. exact same happened to me.. i was almost crying just now.. thanks again! Your a lifesaver mlee61

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