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Windows 7: New system....CDBOOT: Couldn't find BOOTMGR


22 Nov 2009   #1

 
 
New system....CDBOOT: Couldn't find BOOTMGR

Hi all,

I have searched high and low for this answer with little luck on how to fix. I have built a new system (first ever) machine posts no problem (i think) I can get into BIOS and it sees both HD and DVD drive. I have boot priority set to DVD. When I put the Windows 7 disk in I get this error "CDBOOT: Couldn't find BOOTMGR"

I have booted the computer with the disc that came with the Mobo and it sees it. I have put the Windows 7 disc in another computer and know it works.

Any help would be GREATLY appreciated!!

Luciano

My System SpecsSystem Spec
.

22 Nov 2009   #2

7600.20510 x86
 
 

Hi.

You probably burnt the DVD wrong and made a data disk.

You need to burn it as .iso instead.
My System SpecsSystem Spec
22 Nov 2009   #3

 
 

it's a brand new out of the box disc (Windows 7 Pro)
My System SpecsSystem Spec
.


22 Nov 2009   #4

64-bit Windows 8.1 Pro
 
 

Even though you were able to boot another machine with your current disc is no guarantee that it will work on yours.. You have built yourself a very high end machine and they tend to be very finicky... I would re-burn the ISO file (as an image file ) at the slowest possible speed. I would also remove all but one stick of RAM before attempting to install... Let us know how it comes out..
My System SpecsSystem Spec
22 Nov 2009   #5

7600.20510 x86
 
 

lol Tews and I must not be doing so well with reading lately...heh Tews?

I missed this part - "I have put the Windows 7 disc in another computer and know it works."
and Tews missed this - "it's a brand new out of the box disc (Windows 7 Pro)"

So LucRad, maybe you'll have better luck if you boot to a USB key instead. You can make one with the DVD you have on the other pc. To boot to USB, sometimes you have to set it to boot to HDD and then pick the proper USB key. And also sometimes, you can have boot choice instead, simply by hitting f8 at startup.

No matter what you do though, if there is a setting in the bios for Plug and Play OS - set it to yes (it's on all Asus boards so look for it - disabled as default.) And you might have luck booting to DVD if you change the AHCI setting.
My System SpecsSystem Spec
22 Nov 2009   #6

64-bit Windows 8.1 Pro
 
 

I blame it all on old age and the fact that I cant find my glasses...
My System SpecsSystem Spec
22 Nov 2009   #7

Microsoft Community Contributor Award Recipient

Vista x64 / 7 X64
 
 

Hi luc,

As has already been mentioned, the first thing to try is changing the disk controller in BIOS from AHCI to ATA - see if that helps.

See if there any driver updates for your mobo and dvd drive firmware from the mfr. websites.

Otherwise a bootable usb stick may be the answer - try the free WinToFlash.

WinToFlash - Install Windows from usb - Home page

Also, if you can boot a Vista dvd - boot to the cmd prompt on that - take the Vista dvd out. Put 7 dvd in and run the setup.exe that is inside the 7 dvd sources folder.

Hope it helps.

Quote   Quote: Originally Posted by LucRad View Post
Hi all,

I have searched high and low for this answer with little luck on how to fix. I have built a new system (first ever) machine posts no problem (i think) I can get into BIOS and it sees both HD and DVD drive. I have boot priority set to DVD. When I put the Windows 7 disk in I get this error "CDBOOT: Couldn't find BOOTMGR"

I have booted the computer with the disc that came with the Mobo and it sees it. I have put the Windows 7 disc in another computer and know it works.

Any help would be GREATLY appreciated!!

Luciano
My System SpecsSystem Spec
22 Nov 2009   #8

 
 

OK so far no luck..have ruled out bad DVD player as it ran other discs.

Have changed my "Storage Configuration" to IDE and AHCI. There is a third option RAID which I have not tried.
Have chnaged my cJ-Micron eSATA/PATA Controller Mode from IDE to ACHI several times
Have changed SATA cable
Removed all but one ram chip
removed sound card
unplugged and reseated sata, power cables (even tried a few different ports)

still stumped despite my best research
My System SpecsSystem Spec
22 Nov 2009   #9

Win7
 
 

There is nothing wrong with your hardware. It is a conflict between the boot code on the Windows 7 disk and your hardware. For some reason this Windows 7 bootcode does not like some motherboards. Go to this site UNAWAVE - Code 5 Error whilst booting Windows 7 DVD and DO EXACTLY what he has laid out and you will load Windows 7. You will need a Vista disc, but not the whole install disc. Go here for that: How to Make a Windows Vista Repair Disk If You Donít Have One :: the How-To Geek Take your time setting up the ISO disk and it will work. If I can do it (which is saying a lot) you can too! BTW, my motherboard was not one that was listed in the Unawave fix, so the problem affects others as well.




My System SpecsSystem Spec
22 Nov 2009   #10

 
 

Ok I created a vista repair disk but the instructions on the top link "unawave" aren't the same as the version of imgburn that i have so took me off track and can't get it right....uggggg....grrrrrr
My System SpecsSystem Spec
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 New system....CDBOOT: Couldn't find BOOTMGR




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