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Windows 7: Boot manager is missing (please read and help)

23 Dec 2011   #31
gregrocker

 

It looks like the Win7 files are there. I'd copy out your files using the method I gave you before, then reinstall from boot so you get Win7 on C.

If you really want to try to rescue this Win7 there may be partition damage since Win7 won't convert to Primary,. Try rightclicking it to run File System checker.

Once it's checked out, rightclick in the first Unallocated space of 66gb to create a New Primary partition of 200mb, click OK. Then rightclick to Modify>Set to Active, OK, Apply steps. Now highlight Disk 1 and try Rebuild MBR from Disk tab. If Win7 doesn't start, boot into DVD REpair console or Repair CD to run Startup Repair repeatedly to see if it will start within 3 separate repairs.


My System SpecsSystem Spec
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24 Dec 2011   #32
123wc

Windows 7 (32bit)
 
 

You are a life saver. I copy and pasted the files I need to an external HD. I installed a new Win7 on the empty partition. Everything went fine but for some reason the screen goes completely black after few minutes of being logged in into Windows 7. Do you know what's happening? Is the PC restarting, that's what I thought and I did a start up repair and it said it fixed the problem but it happpened again. Any ideas what is going on here? Many thanks.
My System SpecsSystem Spec
24 Dec 2011   #33
theog

Microsoft Community Contributor Award Recipient

ME/XP/Vista/Win7
 
 

Try disabling the display adapter in safe mode.
Safe Mode

Why is my screen black when I start Windows 7?
My System SpecsSystem Spec
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24 Dec 2011   #34
wanchoo

Windows 7 Pro with SP1 32bit
 
 

Let me describe my experience about "bootmgr not found" that happened this morning.

My daughter has a Dell Laptop purchased a few months back. The vendor had given it with an unauthorised copy of Window 7 Pro. When I learnt about it I purchased a genuine copy of Windows 7 Pro to replace the existing one.

The hard disk was with 4 partitions of which the first was a hundred megs System Reserved Partition. After successfully installing and activating the genuine Windows 7 Pro, I turned my attention to the tidying up of the partitions on the hard disk. In the process I deleted the System Reserved Partition which was the first one and merged it with the partition with the OS. I also merged the two partitions after the OS. The Hard Disk was left with only two partitions neatly placed next to one another and named C and D.

When I rebooted the computer, it would not boot at all and kept on coming up with the message "Boomgr not found. Press C+A+D to restart." When I tried to repair or reinstall the OS all over again, it gave the same message. I tried every trick known to me but to no use. It was the scariest 90 minutes of my life with computers.

Finally I again opened the partitions with Acronis Disk Director Boot CD and deleted the Partition C. Then I created a new partition C on the space that had become unallocated and formatted it to NTFS. After that I again started the Windows 7 Pro Setup DVD and it booted as normal and went ahead and installed the OS (Windows 7 Pro) and everything was back to normal. And Hard Disk had just two partitions placed side by side.

So now I think that whenever one gets the message of "Bootmgr not found" one should just clean up everything and reinstall the OS like I did. I am still wondering what was inside the deleted partition "System Reserved" that caused all the mess in the first place.





Quote   Quote: Originally Posted by 123wc View Post
Hello, how can I make Windows 7 the active partition when the diskpart does not even detect/recognize the Windows 7 partition?


Quote   Quote: Originally Posted by gregrocker View Post
You must burn PW CD ISO using an image burner like ImgBurn.

Confirm that Win7 is Active partition. Then click on HD to highlight, from Disk tab select Rebuild MBR, Apply.

This may preclude the need to run the repairs 3 times.
My System SpecsSystem Spec
24 Dec 2011   #35
kayax

win7 home and prof 64bit
 
 

@123wc,

why not trying the tool testdisk (from GParted LiveCD) which can fix partition tables.

Look at GParted -- Live CD/USB/PXE/HD
My System SpecsSystem Spec
24 Dec 2011   #36
kayax

win7 home and prof 64bit
 
 

...ok, you said you can't enter the bios setup...
does that work in the meanwhile?
My System SpecsSystem Spec
24 Dec 2011   #37
123wc

Windows 7 (32bit)
 
 

I made a new Windows 7 installation but I can't see anything when windows start--I keep getting this black screen. Updating the driver does not help, and I can't access safe mode for some reason. When I can access save mode then the display is fine.
My System SpecsSystem Spec
24 Dec 2011   #38
123wc

Windows 7 (32bit)
 
 

Doing a start up repair or system restore did not help either because this is a fresh copy of windows 7 (there is nothing to restore it to.)
My System SpecsSystem Spec
24 Dec 2011   #39
gregrocker

 

Quote   Quote: Originally Posted by 123wc View Post
Doing a start up repair or system restore did not help either because this is a fresh copy of windows 7 (there is nothing to restore it to.)
Then we need to troubleshoot the install.

Let's take it a few steps at a time so you can report back after each for interactive support:

Reset the BIOS to defaults: Clear CMOS - 3 Ways to Clear the CMOS - Reset BIOS

While in BIOS setup set SATA controller to AHCI to try install, DVD first in order to boot, followed by HD.

If this fails, wipe the HD using booted PW CD Disk tab.

Next test the HD with maker's HD Diagnostic extended CD scan, followed by Disk Check on full HD partition you create with installer or PW CD.

Fill in your System Specs in bottom left corner of your post.


Quote   Quote: Originally Posted by wanchoo View Post

So now I think that whenever one gets the message of "Bootmgr not found" one should just clean up everything and reinstall the OS like I did. I am still wondering what was inside the deleted partition "System Reserved" that caused all the mess in the first place.
Deleting the System Reserved boot partition might make Win7 fail to boot? Ya think?

Did you notice that it said System and Active on that partition? If not then you shouldn't be "cleaning up" partitions after installation, then coming here afterwards (instead of in advance to ask) to report that the solution is reinstalling Win7.
My System SpecsSystem Spec
24 Dec 2011   #40
123wc

Windows 7 (32bit)
 
 

Thank you very much everyone for your responses. Special thanks to gregrocker for his continuous helps--I wouldn't be able to recover my files if it wasn't for him.

My PC is running Windows 7 now, and as always I LOVE Windows 7! The black screen problem was caused because my video card's update. When I undid the update to my video card the problem went away. Of course, I made sure Windows update is manual otherwise it will install the video card update and I will get the black screen again (sadly, this is the first update Windows 7 does!)

I will keep my PC as one partition C, and that should be good enough for me.

Thank you every one again, and special thanks to gregrocker for his patience.

Merry Christmas and Happy New Year
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 Boot manager is missing (please read and help)




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