Reboot and select proper boot device

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RedFalconHayabusa

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Jul 18, 2013
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Today I just got a new mobo and cpu, installed everything and booted up but it says reboot and select proper boot device.
I went into the bios and it does detect my HDD (which was working fine earlier today on my older cpu and mobo) so I set it as first boot device but I still get the error.
I've used a new sata cord and plugged it in the first sata slot but still get the error.
 
Solution
Vahe Bro A
If flashing your bio's does not help. then i would suggest Reformating your HHD. So you will ahve to BOOT with Windows CD and when installing CLick on CUstom install and Reformat your HHD and install windows again. That will forsure fix the problem. Most of the times windows will detect the new motherboard and do a repair. but when it doesn't you would have to reformat your HHD and install it again.

There are many ways that you can save the files on your HHD. You can plug back the HHD in another computer and run it and Make a NEW partition and Put all the files you want in there and when you are reformating the HDD you will just Pick the main partition that windows is installed in and the other partition will remain with your Data.
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I'm using a new asus m5a78l-m/usb3 and trying to boot from the HDD I used with my old motherboard and it has windows 8.1 installed on the hdd.
I've tried using different sata ports but it makes no difference.
 
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Hi

Boot off your windows DVD or USB and let it do a startup repair

If you don't have the windows 8 or 8.1 disk then put hdd back into old PC
Make sure it boots up there
And make a windows System repair disk

http://windows.microsoft.com/en-GB/windows7/Create-a-system-repair-disc?

Did you have one or two hdd in old PC?
If two possibly boot files or partition and wondows are split across two hdd

I hope you have a retail windows not a oem windows or you had a oem windows 8 DVD you purchased yourself so licence can be transferred to a new PC & motherboard

Regards
Mike Barnes
 
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before doing anything i would Flash your bio's. Go here https://www.asus.com/us/Motherboards/M5A78LMUSB3/ Click on SUPPORT on top right side, then pick Driver & Tools then Click on the OS you are using. And Find BIO's and click on BIO's and download the first BIO's. You will have to download the ROM file into a Flash drive with another computer.

here is A video how you can Flash your BIo's https://www.youtube.com/watch?v=37Ubqic8XiU
 
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If flashing your bio's does not help. then i would suggest Reformating your HHD. So you will ahve to BOOT with Windows CD and when installing CLick on CUstom install and Reformat your HHD and install windows again. That will forsure fix the problem. Most of the times windows will detect the new motherboard and do a repair. but when it doesn't you would have to reformat your HHD and install it again.

There are many ways that you can save the files on your HHD. You can plug back the HHD in another computer and run it and Make a NEW partition and Put all the files you want in there and when you are reformating the HDD you will just Pick the main partition that windows is installed in and the other partition will remain with your Data.
 
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Solution
Hi

Another thought
modern motherboard has uefi bios old motherboard had standard bios

One boot option expects win 7 or 8 with 64 bit version with gpt partitioning on hdd
While old hard drive probably has mbr partitioning

Assuming OLD hdd not exceeding 2 TB

Check uefi bios setting relating to boot disk

Regards
Mike Barnes
 
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Asus boards are having two options for boot priority. Priority which hdd shall boot first and additional which medium shall boot, hdd, DVD, Lan, USB....
Was the win 8 hard drive the only hdd in your old system? If not, the other hdd could be responsible to boot windows because it could contain the mbr.

If changing the main hardware of a PC it's recommended to fresh install windows with the new drivers or old drivers could prevent the PC to run stable or at it's best performance.
 
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Ok so I think I've kind of found a solution to the hard drive booting problem.
Instead of letting the computer boot by itself, I press F8 and manually select the boot device. No error appears except... Just before it shoud normally boot, I get no signal from my monitor yet there was a signal in the bios and before it boots from a device. I think it actually boots successfully but I just get no signal. I tried both the repair usb and the HDD but the signal becomes a problem when I boot them.
I'm using HDMI plugged into my graphics card if that helps.
I also have a brand new fx-4300 in the mobo and I know this cpu doesn't have integrated graphics
 
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Like I said, if f8 works, the boot priority is wrongly set in bios.

Your motherboard has an onboard graphics chip, plug your monitor into the mainboard. Install drivers for your video card

Eventually you have to boot windows in safe mode (f8) after bios post and uninstall the old graphics driver
 
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I took out my gfx card, plugged in an old monitor into the motherboard but now it says the same HDD error again. But now I can boot startup repair from my usb now only thing is, it says startup repair couldn't repair your pc. My hdd works fine on other mobo... But maybe startup repair wont work because when I try the other option which is 'refresh your pc', it says the drive where windows is installed is locked. Unlock the drive and try again'. I don't know what to do...
 
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So I put my hdd in old motherboard and after I move all the files into a new partition, I reformat the hdd from the old motherboard? After the hdd is reformaed, I put the hdd into the new motherboard and install windows from disc or usb right? I just want to make sure.

 
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no you put it into the new computer and you reformat it. the only thing you can do with the old computer is to make a new partition from windows and put in all the files. once you did that. plug the Hdd into the newer computer and reformat the large partition and make sure to delete any other Backup partition's that's not the one you made. then install windwos
 
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Thank you for your help.
To be sure, I have a windows 8 bootable usb and will that reformat the hard drive during the installation? I will still have my files that I put on a new partition after it has windows has been installed right?
 
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yah. when it say's INSTALLATION. "RECOMMENDED INSTALL" or CUSTOM INSTALL click on Custom and then click on the Blue Advnaced options. that will let you to format your first main partition.

So you might have a partition that's named Reserved partition. you would need to delete that and just reformat the main partition. and yah i belive the USB will also reformat it. Just don't touch the New partition you made. but delete any extra partition and reformat the main one.
 
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Thank you very much
 
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Yup, it worked! Thank you very much.

 
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