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Windows 7: Weird 'reboot and select proper boot device' problem!!!

22 Nov 2010   #1

windows 7 RC
HELP!!! 'reboot and select proper boot device' problem!!!

I know that this may sound like a common problem but after searching the forums and on google I can't find anyone with this particular problem. My PC is a custom build that I built a couple of months ago and has been running without problems until now.

Here is the spec of the PC:

Windows 7 Ultimate 64-Bit
Intel i7 980x
Corsair 12 GB 1600 DDR3 RAM
Asus P6 X58 D Premium
2GB ATI Radoen 5970
128GB Crucial SATA 6Gb/s SSD (this is where windows 7 is installed)
2x 1TB Western Digital SATA 6Gb/s
Samsung Blu Ray Drive

If anyone needs a more detailed spec than this let me know.

The Problem:

When I originally built the PC the motherboard only came with 1 6Gb/s SATA cable which I used for the SSD (this is where I installed windows). I then had one of the 1TB drives plugged into the other 6Gb/s SATA port using a standard SATA cable and one 1TB drive plugged into a standard 3Gb/s SATA port. Today I got a hold of a 6Gb/s cable so decided to swap out the standard cable on the 1TB drive to improve it's performance.

However, after swapping this cable out I now get the 'reboot and select proper boot device' error and windows wont boot. All drives appear in the BIOS correctly and I've double and triple checked that the boot sequence is correct. I've even swapped back to the original cable and it still wont work.

I've tried inserting the windows disk and running system repair but windows cannot detect that windows is installed on any of the drives. When I click on 'load driver' I am able to browse through all the connected drives and they are all intact and I can see all of the files stored on all 3 of them. My main drive is listed as C: but windows just wont boot to it, which makes me think that it's a software problem!

When I've run through to Windows 7 installation it lists all the drives as options to install to so I don't think it's a driver issue. Besides, I was able to install to that drive originally without the need for a driver.

Any ideas on how I can get my drive recognised as the boot drive again?

Thanks in advance for any responses!

My System SpecsSystem Spec
22 Nov 2010   #2

windows 7 RC

This is starting to turn into quite a major problem for me since I use my PC to work on and currently I am unable to do anything! Any advice would be most appreciated!
My System SpecsSystem Spec
22 Nov 2010   #3

Windows 7 Home Premium x64

Have you tried clearing your BIOS NVRAM?
It's just a thought.... might even be a stupid one...but, when one gets desperate...
My System SpecsSystem Spec

22 Nov 2010   #4

windows 7 RC

Isn't that a little risky? I mean I know I need to get this sorted ASAP but isn't there a risk that I could completely brick the motherboard? I don't mean to sound like a noob if that isn't the case, that's just the impression that i've gotten from other threads i've read.

I'd rather try to find a solution along the 'Windows Startup Repair' route if possible. Is there no way to fix it through the command prompt when booting from the windows install dvd?
My System SpecsSystem Spec
22 Nov 2010   #5

windows 7 RC

Ok well I just ignored my own fears of bricking the motherboard and went ahead and updated the BIOS! I noticed that I was running a fairly dated version so thought maybe the new version would have added updates. Unfortunately I've had no such luck since the problem is still there.

Any other ideas? Does windows have a boot.ini file or something that tells the BIOS to boot? Could that file be corrupt or need editing or something?
My System SpecsSystem Spec
22 Nov 2010   #6
Bare Foot Kid
Microsoft MVP

W 7 64-bit Ultimate

Hello lordbob24, welcome to Seven Forums!

First disconnect all Hard Disk Drives (HDD) except the one Windows is installed to, then boot to diskpart to see if the Windows partition is marked as "Active" if it is then do the 3 separated startup repairs out-lined in this tutorial at the link below.

If not use Step Two # 1 to mark it active then do the startup repairs to get Windows booting again.

Startup Repair - Run 3 Separate Times

click to enlarge
Attachment 116546

My System SpecsSystem Spec
22 Nov 2010   #7

Windows 7 Home Premium x64

When I said to clear the NVRAM that did not mean to update your BIOS.

BIOS updates are always risky for various reasons.

Your BIOS can be cleared by moving a jumper for a few seconds (usually) or resetting defaults within BIOS itself.
On much older MOBO's you had to remove the battery for 30 seconds or so.
Information should be in your User Manual.

I'm sorry for the misunderstanding.
My System SpecsSystem Spec
22 Nov 2010   #8

windows 7 RC

Sweet!!! That seems to have sorted it and in the process saved me from hours of hassle!

I did exactly as you suggested Bare Foot Kid and after using DiskPart to mark my system drive as 'Active' it appeared in the startup repair list as 'Windows 64-bit Ultimate (recovered)' or something close to that. Once windows startup repair was able to recognise the installation it was able to repair it and did take 3 system restarts to get there. But I'm now all up and running again, albeit 7 hours later! Officially the longest it's ever taken me to swap out a cable in a PC!

rapp33042, thanks for the info and it was totally my fault for assuming that clearing the NVRAM was risky when in fact flashing the BIOS is far more so! Anyway it's done no harm!

Thanks for all your help guys! You're awesome!
My System SpecsSystem Spec
22 Nov 2010   #9
Bare Foot Kid
Microsoft MVP

W 7 64-bit Ultimate

Good to see you have it running and thanks for the update.
My System SpecsSystem Spec
31 Jan 2012   #10

Windows 7 Home Premium 64bit

Quote   Quote: Originally Posted by Bare Foot Kid View Post
First disconnect all Hard Disk Drives (HDD) except the one Windows is installed to, then boot to diskpart to see if the Windows partition is marked as "Active"
Hoorah!! You, sir, are my hero! After months of googling to get a working fix on this, I finally got my search straight and got here. I learnt to use Diskpart in two minutes and managed to mark it as Active, which lead me to be able to find it in the windows Repair tool.

Next thing I knew, everything worked!

Thanks to OP for the beautifully detailled thread, very useful!
My System SpecsSystem Spec

 Weird 'reboot and select proper boot device' problem!!!

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