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Windows 7: Win 7: Black screen on boot up, before login screen?

22 Aug 2015   #111
MDRI

Win 7 64 bit, 6.1.7601 Service Pack 1 Build 7601
 
 

I did that. Syslinux created the isolinux.cfg in my USB drive. It has 8 files + boot (outlook item).

I changed the boot order in BIOS to pick the flash drive as 1st priority. It is not booting from USB flash drive.

Are there any other changes required to boot from Flash Drive?


My System SpecsSystem Spec
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22 Aug 2015   #112
baarod

El Capitan / Windows 10
 
 

Quote   Quote: Originally Posted by MDRI View Post
I did that. Syslinux created the isolinux.cfg in my USB drive. It has 8 files + boot (outlook item).

I changed the boot order in BIOS to pick the flash drive as 1st priority. It is not booting from USB flash drive.

Are there any other changes required to boot from Flash Drive?
Normally that works. Did you run syslinux.exe -ma as administrator? If that's not it perhaps use diskpart to list disk, select the USB, clean, create partition primary, activate, format quick, exit

Then unzip again and run syslinux.exe -ma as administrator.
My System SpecsSystem Spec
22 Aug 2015   #113
MDRI

Win 7 64 bit, 6.1.7601 Service Pack 1 Build 7601
 
 

Yes, I run syslinux.exe -ma as administrator on another win 7 machine.

Do I need to do this diskpart on Z580 or another working machine?

I did the FORMAT of USB, before copying the files .

If I use diskpart to list disk, select the USB, clean, create partition primary, activate, format quick, exit, will it preserve the content on the disk?

Thanks.
My System SpecsSystem Spec
.

22 Aug 2015   #114
baarod

El Capitan / Windows 10
 
 

Any machine should work. No the contents of the USB stick will be lost. The contents of the hard disk will not. You're simply making sure the USB disk is prepared for booting by syslinux.
My System SpecsSystem Spec
22 Aug 2015   #115
MDRI

Win 7 64 bit, 6.1.7601 Service Pack 1 Build 7601
 
 

It is still not working with this USB BOOT. I am not sure why. Is there a ISO version for this software?

I did with ISO file with USB earlier for patitionwizard. It worked.
My System SpecsSystem Spec
22 Aug 2015   #116
baarod

El Capitan / Windows 10
 
 

Quote   Quote: Originally Posted by MDRI View Post
It is still not working with this USB BOOT. I am not sure why. Is there a ISO version for this software?

I did with ISO file with USB earlier for patitionwizard. It worked.
http://pogostick.net/~pnh/ntpasswd/cd140201.zip
My System SpecsSystem Spec
23 Aug 2015   #117
MDRI

Win 7 64 bit, 6.1.7601 Service Pack 1 Build 7601
 
 

I am able to work with ISO. I did unlock my regular Z580 admin & administrator account. I erased the password for both.

I restarted . It did not ask me recovery option.

Do you want me to use repair disk to do that?

The start windows normally goes to Black screen with cursor in the middle.

Do you want me to do

F8 ===> Repair Computer===> Command Prompt ===> Works OK

It goes to System Recovery option ==> Select a keyboard input Method (Drop Down)

Then it goes to System Recovery option log on drop down (shows Admin, defined local users)

Do you want me to pick adminstrator here?
My System SpecsSystem Spec
23 Aug 2015   #118
baarod

El Capitan / Windows 10
 
 

So when you start normally (not F8) it fails to ask you to login?
My System SpecsSystem Spec
23 Aug 2015   #119
MDRI

Win 7 64 bit, 6.1.7601 Service Pack 1 Build 7601
 
 

Yes, It is same old story. Starting windows + LOGO == > Black screen with cursor in the middle.

I am able to see Administrator in drop down under F8 route now.

Do you want to continue today or we can re-group tomorrow? Thanks for helping .

If we have a chat session, it works better.

Update 8/23/2015

I am editing this post #119 for update.

I tried your suggestion of disabling all account except administrator this morning. I am not able to get to disable option. I find a checkbox before useredit option. After selecting the user for edit, it is not allowing me to go there. I did not find a way to disbale/lock an account. It allows to unlock a locked account.

I am attaching the screenshot/video for your review.

Existing start-up issue video (Black screen)

Offline Windows Password & Registry Editor (OWPR) - Screenshots

UserData Start (picking SAM password)

Userdata EDIT

You mentioned about registry corruption. Is there way to restore from internally stored registry backup?

Update 8/23/2015 9:11 PM

I tried the steps for win 7 command line as described in "Windows 7: User Account - Enable or Disable" of this forum to disable all accounts except for the administrator.

I tried via recovery console by logging in as Z580_admin & unlocked Administrator. Here is the outcome for both logins.

Code:
X:\windows\system32>net user
 
User accounts for \\
 
---------------------------------------------------------------------
Administrator            Guest
The command completed with one or more errors.
Let me know your insight.
My System SpecsSystem Spec
23 Aug 2015   #120
baarod

El Capitan / Windows 10
 
 

Yes. Re-group tomorrow. In the meantime you might want to try using the Offline NT Password tool to disable all accounts except for the administrator.
My System SpecsSystem Spec
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 Win 7: Black screen on boot up, before login screen?




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