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Windows 7: BOOT/BCD problem


15 Feb 2011   #1

Windows 7
 
 
BOOT/BCD problem

Hi,

Toshiba laptop, L300D.
Cant get it to boot up.
A black screen with white writing gives a message about unable to boot,
cannot find BOOT/BCD
And an error: 0cx000000f
------------------
I am not familiar with using the repair facilities,
and i would appreciate any help with this.

Cheers, John

My System SpecsSystem Spec
.

15 Feb 2011   #2

Windows 7 Ultimate X64 SP1
 
 

Hi John, welcome to Seven Forums.

Im pretty sure you have the same laptop as my girlfriend, if I remember rightly the repair options are under F8 when you switch the laptop on.

Boot the laptop, and spam F8 until the Repair options surface. (see attached screenshot, although it won't look identical, as it will also have an option that says "Toshiba HDD recovery" or something similar. LEAVE THAT OPTION ALONE!)



Run Startup Repair - Tutorial: Startup Repair you may need to repeat this up to 3 times, until the laptop boots.
My System SpecsSystem Spec
15 Feb 2011   #3

Windows 7
 
 

Hi severedsolo,

Well i hope your girlfriends machine doesn't give the problems that this one has.
i will try to post a pic of the display i get after pressing F8,
or after not pressing F8,
as it ignores the pressing of F8.

I can get to the bios,
not that this is much help.
Or any help really.

John
My System SpecsSystem Spec
.


15 Feb 2011   #4

Windows 7 Ultimate x64 Full Retail SP1
 
 

Do you have the installation disc?
My System SpecsSystem Spec
15 Feb 2011   #5

Windows 7
 
 

Hi badkarma11,

No i'm afraid i don't have the installation disk.
If only i had that installation disk.

I do however have a 'Windows 7 32-bit Repair Disc.iso'
with which i am able to bring up several options,
including CMD.

Unfortunately, i know nothing about Windows 7.
So i thought i would ask here, on this forum.
I will try to post a pic of one of the displays from that CD.

John
My System SpecsSystem Spec
15 Feb 2011   #6

Win 7 Pro x64 SP1 OS X Snow Leopard 10.6.7
 
 

Hello John,

Read this tutorial: Startup Repair

If problem persists, run these commands in Command Prompt (in System Recovery Options)...
bootrec /fixboot
bootrec /fixmbr

If THAT does not fix either, run this final command in Command Prompt...
bcdedit /export C:\BCD_Backup
c:
cd boot
attrib bcd -s -h -r
ren c:\boot\bcd bcd.old

bootrec /RebuildBcd
My System SpecsSystem Spec
16 Feb 2011   #7

Windows 7 Ultimate X64 SP1
 
 

Hi John,

Sorry to hear the first option didn't work, it looks like toshiba has linked the recovery partition to the BCD... that's a really clever idea.

If you have a repair disk, then that should be sufficient to run Startup Repair. Boot from the repair disk and run startup repair from there as per the tutorial I posted before. Again, you may need to run it 3 times.

On a side note, it may be worth checking how you would normally access recovery options, it should be in the documentation that came with the laptop if you have it. Normally this is on F8, I suspect the laptop was ignoring it because it couldn't find an OS to boot anyway. May be worth checking though.
My System SpecsSystem Spec
16 Feb 2011   #8

Windows 7
 
 

Hi DeanP,

Thank you for your reply.
I read through that post/tutorial - Startup Repair
an interesting read.

Also, i am quite surprised at how busy this forum is.
And a lot of it seems to be startup problems.

Somewhere in that Tutorial i found out something very interesting,
that there are two CMD arrangements.
There is an Advanced Command Mode,
as well as an ordinary Command Mode.

I did not know that.

Apparently you know when you are in Advanced Command Mode
because it starts from System32.

Well i am pleased to say that the command mode that i was able to access
did indeed start in system32.

I went back over that tutorial to read up more about this, but i didn't
find it again. I think it may have been via one of the links in there.
From what i recall some of the functions can only be done in the
Advanced Command Mode, so i spose i should be glad i've got to that one.

*************

Anyway, the problem does indeed persist.

After many "Startup Repair" routines, there does not seem to be any change.
I began to wonder if this machine has Windows 7-64, instead of Windows 7-32
so i downloaded a 64bit rescue disk, and got the same results.

Thing is, although i am pretty sure its 32bit, i dont really know.
And i dont know how to tell.

The build is Ver 6.1.7600
For all i know, the 64bit has the same build number.
So, i am going to go with it being a 32bit machine.
(unless theres a way to tell for sure)

*****************

I am going to get back to the advanced CMD,
and do as you say,
bootrec /fixboot then bootrec /fixmbr

Now, will it be Ok to run these commands from the starting point of CMD,
which in this case is
Administrator.X:\windows\system32\cmd.exe
which takes me to

X:\windows\system32>_

********************

Or should i navigate to the C drive ?

Maybe the X drive holds the instructions to work on the C drive,
Or maybe i should go to the C drive to do this.

Unfortunately my knowledge of Windows 7 architecture is no more than a mustard seed,
and my knowledge of repairing it, is even less.
I dont even know what or where drive X is.
(maybe its a repair partition ?)

**********************

I am gratefull for your help,
and i will patiently await your reply.

Regards, John
My System SpecsSystem Spec
16 Feb 2011   #9

Windows 7
 
 

Hi SeveredSolo,
Just noticed your last reply, thanks.
reading through it now.
John
My System SpecsSystem Spec
16 Feb 2011   #10

Windows 7
 
 

found that bit i was looking for.
Its called "Elevated Command Prompt"
not advanced as i had thought.
My System SpecsSystem Spec
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 BOOT/BCD problem




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