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Black screen when booting windows 7


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#16
phillpower2

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Thanks for coming in Macboatmaster :thumbsup:
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#17
Maleboe

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Did as you asked me to do and it did the same as before. There is one 500gb hard drive divided into two partitions. One being F: Command Center(Windows 7) and the other being C:(Windows 8)
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#18
Macboatmaster

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1. In windows 8 open a cmd prompt with admin rights

from desktop windows key then type

cmd

new window will open, it will probably show command prompt on left if not click applications on right.

now right click the cmd prompt and click on options shown below, run as admin

(NOTE you may wish to select another option before for instance pin to start or taskbar etc for future use.)

at the cmd prompt type

cd/

to get to C prompt then type

bcdedit (no spaces)

when that window opens, right click on top bar, click edit, click select all, click edit again, click copy and paste results please on reply.



2. While you are waiting for a response to this, and going back to post 2, if windows 7 is the default operating system, then the F8, and where you used LKG before, please go back there and this time select

Disable Driver Signature Enforcement.

TRY selecting that please, I do not expect it really to work, as I think the files are corrupted and preventing explorer exe from loading., but please try it.




Edited by Macboatmaster, 13 March 2013 - 07:10 PM.

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#19
Maleboe

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Microsoft Windows [Version 6.2.9200]
© 2012 Microsoft Corporation. All rights reserved.

C:\Windows\system32>cd/

C:\>bcedit
'bcedit' is not recognized as an internal or external command,
operable program or batch file.

C:\>bcdedit

Windows Boot Manager
--------------------
identifier {bootmgr}
device partition=\Device\HarddiskVolume1
description Windows Boot Manager
locale en-us
inherit {globalsettings}
default {default}
resumeobject {c937cae5-6a22-11e2-b31f-e12d95298c68}
displayorder {default}
{current}
toolsdisplayorder {memdiag}
timeout 30

Windows Boot Loader
-------------------
identifier {default}
device partition=F:
path \windows\system32\winload.exe
description Windows 7
locale en-us
inherit {bootloadersettings}
osdevice partition=F:
systemroot \windows
resumeobject {c937cae9-6a22-11e2-b31f-e12d95298c68}
nx OptIn
detecthal Yes

Windows Boot Loader
-------------------
identifier {current}
device partition=C:
path \Windows\system32\winload.exe
description Windows 8
locale en-US
inherit {bootloadersettings}
recoverysequence {c937cae7-6a22-11e2-b31f-e12d95298c68}
integrityservices Enable
recoveryenabled Yes
allowedinmemorysettings 0x15000075
osdevice partition=C:
systemroot \Windows
resumeobject {c937cae5-6a22-11e2-b31f-e12d95298c68}
nx OptIn
bootmenupolicy Standard

C:\>
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#20
Maleboe

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I tried Disable Driver Signature Enforcement and it was a bust as well.
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#21
Macboatmaster

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1. As 7 is the default operating system, insert the windows 7 dvd, making that the first boot device, or using the press any key option to boot from optical drive, if you have that.

2. When the disc loads, click the option Repair Your Computer

3. Presuming it finds the windows installation, as I think it did before, proceed to the advanced options and command prompt

4. As you know that opens on the prompt

X:\Sources:>

that of course is the ramdrive created for the purpose of the repair, so it is no use issuing any chkdsk command on there, and indeed it would not run.

5. The Recovery Environment, often changes drive letters., therefore it does not necessarily mean that Windows 7 is now on the drive lettered F as it was in bcdedit and disk management.

6. Ascertain the drive letter by issuing the command as shown in the explanation below

It should be noted that when you boot into the Windows 7 Recovery Environment the drive letter for your Windows installation may not be the same. For example, if your Windows installation is normal on the C: drive, it may not be located at the D: drive. To determine what drive letter your Windows installation is located on, you can type this command press enter:

bcdedit | find "osdevice"

Note please the quotes are typed

then when you have that, check it by issuing the cmd, to change from the ramdrive on X to the drive that is indicated that was lettered F eg.

F: or whatever it is now lettered.

Then when on that drive issue the command

chkdsk /f

and follow prompts from that command



I am signing off - back about 1600 UK time.




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#22
Maleboe

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Okay, I ran chkdsk. What now?
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#23
Macboatmaster

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So may we presume from your last that OK I ran chkdsk - what now, means it did not change anything.



What now

at the X prompt of the ram drive type

sfc /scannow /offbootdir=d:\ /offwindir=d:\windows

changing d for the drive letter allocated for windows 7 as before


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#24
Maleboe

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when I ran System File Check, it gave me the following message afterwards. Windows Resource Protection could not perform the requested operation.
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#25
Macboatmaster

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Well rather than attempting any number of possible fixes at the cmd prompt, I think it best to try booting from the windows 7 dvd and on the Repair Your Computer option, select system restore.



I think it worthwhile trying the system restore, as you have the dual boot, the restore of 7, if there is a restore point SHOULD restore to the correct dual boot

I do have a doubt, in view of what I have seen so far, if indeed it will find any restore points.




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#26
Maleboe

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It didn't find any restore points
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#27
Macboatmaster

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Well it gives me no pleasure at all, but I had a feeling, that may well be the result

I do have a doubt, in view of what I have seen so far, if indeed it will find any restore points.


What backup/ system image, do you have please

I am not looking to a reinstall, but just in case, any next steps go haywire


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#28
Maleboe

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I believe I have backed up most of the files I need off of the partition. It's one partition at risk right?
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#29
Macboatmaster

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Well hopefully it is only a precaution.

If it were me, I would create a full image, an image is a backup, but a backup is not necessarily of course an image.

In other words I would make a full system image of the computer using something like TODO free backup/image or the utility in windows 8 - titled windows 7 file recovery and repair disc

When you have done that, as a first step, reinsert the dvd, and try startup repair, it only fixes so many faults on one run, so if it does report problems were found and repaired, and it still will not boot, try it again.

It will also ;provide you with a report of the problems - hopefully



Signing off - goodnight.


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#30
boyans

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sfc /scannow /offbootdir=d:\ /offwindir=d:\windows


Any important user files (files you have created) should be copied on external media just in case !

Have you tried running offline sfc command when booted to Windows 8 ?

You have to put correct drive-letter for Windows 7 partition !
See drive-letter for Win 7 in File Explorer.

------------------------------------------------------------------

As a last resort if sfc is not working
(should work and can be run several times until no errors reported)
the saved registry files in Win7\windows\system32\config\RegBack
can solve maybe the problem if other system files (kernel, drivers) are intact.

Registry files can be copied
from
Win7drive\windows\system32\config\RegBack
to
Win7drive\windows\system32\config\

But first make a new folder say "MyRegistryFiles" and copy all registry files
from Win7drive\windows\system32\config to MyRegistryFiles (you can restore later if needed).


Please note the date of registry files, if they are rather old you will loose all programs installed since then (will loose the capability to launch but not the files installed on disk)
You can later reinstall programs you need.

Edited by boyans, 15 March 2013 - 09:19 AM.

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