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

Why not just install Windows 7/8.1/10 or whatever and then run this Lenovo Onekey Recovery for Microsoft Windows 7 - Notebook - Lenovo Support (US) to recreate the OneKey partitions?

From your post #89

I do have lot of installed software/tools for which I do not have KEYS to reinstall.

I have asked this question of you before and never got a answer.
So I will ask again.

How and why do you have software and tools that you don't have key for.

Emergency Kit - save your files from a dead OS

Because this thread has so many post and suggestions and no resolution has been found let start with a basic.
It might reveal something to help.

Complete this tutorial by Brink and post the log here.

Windows Genuine and Activation Issue Posting Instructions

Recovery console does not provide a runtime environment supporting the diskpart, imagex or bcdboot utilities required to prepare and apply a WIM image volume. You will need some kind of bootable media providing at least a Windows PE (pre-installation environment). What steps have you tried in the recovery environment? What error are you getting when you try to boot normally? Have you tried safe mode?

To extract keys from an existing installation of Windows I use Nirsoft's utility ProduKey - Recover lost product key (CD-Key) of Windows/MS-Office/SQL Server

MDRI, I have read the thread now. Don't bother answering my questions above. Here's what I know from the thread. BIOS can boot MBR and boot sect code gets you far enough for recovery console. The mouse pointer showing up means that Windows has started and it has nothing to do with partitions etc. SFC isn't finding much and your disk looks OK. What's left is your user profile. A corrupt user profile can hang the system at the point you described. Do you have autologin enabled? Did it hang before or after entering password? Offline Windows Password & Registry Editor This utility can boot the machine, enable the hidden built-in administrator account and erase it's password. By using this account you can create a new profile. Are you following me?

Thanks for your reviewing thread. I appreciate your questions.

I described the out come of all options in Post #20.

When I pick SAFE Mode. It loaded couple of drivers and paused at CLASSPNP.SYS load. It went to Black screen with cursor at center.

I am not sure, whether Autologin enabled.

As I boot the computer, I am getting LENOVO banner & Starting widows+LOGO. After a while it goes to Black screen with cursor in the middle. Cursor is respoding to mouse keys.

Normally I will get login music after Starting widows+LOGO. I am not getting it now.

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)

It validate the all login credentials. If I pick Admin, I can get into elevated command prompt.


If I enter Runs as Admin command ==> it asks PW. It recognize the admin PW here.

I am not able to run GUI based command. I am getting
"The subsystem needed to support the image type is not present."

I am able to run DISKPART.

I used the HIREN's Bootable CD to poke around. I am able to see all folders/contents, except hidden recovery partition. There is no drive assigned to it. I backed up the folders using HIREN's Bootable CD tools.

I am following you. How do you want me to use Offline Windows Password & Registry Editor?

@Layback Bear

I tried MGADiag Tool. I am getting. "The subsystem needed to support the image type is not present."

Are there any services to be started in command prompt to make this work?

Awaiting for next steps .

Thanks for helping.

Do you manually log on? I mean, does Windows prompt you for a password or do you choose a user account to log in?

Do you have any other accounts in that drop down that you can try to login with? If not you can use the Offline Password Reset to enable the built-in Windows default administrator account (normally hidden) and reset it's password so you can use it to login and create a new user profile for yourself. My educated guess from everything you've said is that your existing profile in the registry is damaged and will not allow successful login. By creating a new one by way of the built-in administrator account you will again be able to login and then all that's left is to move all the files from your old c:\users\<profile> tree into the new one. Use these instructions Offline NT pw & reg-editor, walkthrough