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

Thanks again. It is more surprising now. I did not add any partition, since I purchased the laptop.

I did post the diskpart earlier. Here you go again.

Code:

 
DISKPART> list volume
 
 
  Volume ###  Ltr  Label        Fs   Type        Size    Status     Info
  ----------  ---  -----------  -----  ----------  -------  ---------  --------
  Volume 0     F DVD-ROM     B  No Media 
  Volume 1     C      NTFS      Partition    200 MB  Healthy
  Volume 2     D   Windows7_OS  NTFS   Partition    653 GB  Healthy
  Volume 3     E   LENOVO       NTFS   Partition       25 GB  Healthy
   Volume 4     G    FAT    Removable    979 MB  Healthy
  Volume  5         LENOVO_PART NTFS   Partition     19 GB Healthy    Hidden
 
 
DISKPART> exit

Awaiting for your insight?

Update:

I am finding some threads talked about OEM partitions in Lenovo Z580 (subject laptop). Is it the one shows as 5th partition in Partition Wizard?

I have nothing more to say than that is contained in post #78

Welcome to this thread. Thanks for looking into my issue. I appreciate your assessment. :)

I did see UEFI Boot Legacy mode was [Enabled] in BIOS by Local default setup. I changed to [Disabled] & tried to boot ===> Same outcome (Black screen with cursor in the middle).

I reviwed your link (Lucid Puppy way to recover files from a non-bootable computer) , where you mentioned

if after trying out the various Windows Repair Options, Windows refuses to budge and only a reinstall is the option,

Did we try all the options before leading to reinstall? Here are the things we covered so far. Please correct me, if I miss something

Code:

Virus/Malware ==> Ran WDO nothing showed up (Post #18), Farbar Recovery Scan Tool x64  post # 24-29
Registry disruption ===> ???
Memory Health ===> Post # 61 Passed
HDD Health ===> Partition Wizzard/Sea tools post #77 , #78, #83
HDD Health/Drive health ===> Sea tools post # 55, # 61
HDD Health ===> Chkdsk, Diskpart post #20, # 57
Drivers Health ===> SFC ===> CBS.log post # 51
BIOS Health =====> ????
Graphic Card Health ===> ????
Windows 7 (OS) Health ====> ????
Config Health ====> Lazesoft Recovery Suite Home Edition Free post # 
31-32 ==> Unable to get into msconfig same black screen
BIOS Default settings ==> same black screen post # 41

Do we need to address the items with ???? before going to reinstall?

What is suspicious is the 201.87 MB Unallocated logical partition shown in Partition Wizard. I would think that some "unauthorised" program - it could as well be a game that was tried on the machine - tried to create its own partition, failed and left the debries. Naturally it should have tried to grab some space from the other legit partitions. Once the original partition structure changed your system became unbootable.

I have three(3) user logins in this laptop such as Admin, Local user1, Local user 2. The regular use of this computer was with Local User 1 primarily, that does not have admin rights to install/configure disk partition etc .

How does a "unauthorised" program/games alter the disk structure without Admin rights?

Lenovo's Partition Structure with "One Key Recovery/Restore " is very sensitive and I am sure you have seen many users trying to resize the original partitions getting into problems in Lenovo forums.

How do we protect the partition (OEM hidden) required for "One Key Recovery/Restore " operation during our clean install?

Do we able to backup this partition (OEM hidden) using Lucid Puppy?

As I mentioned earlier, I have three(3) user logins in this laptop such as Admin, Local user1, Local user 2.

What are the additional steps required to preserve the data within these logins?

I have installed various tools/software in this laptop.

Will I able to restore (bring back) all installed items (Software/tools/Registry entries etc) during this process?

My HDD capacity is 750 GB. What kind of media to use for backing up my data using Lucid Puppy?

Will Read/write CD work?

How do I restore back after setting to factory default?

How do I bring back all the windows 7 updates todate?


Thanks for helping.

After reviewing GokAy's suggestion,

What do you guys think of:
- Merging that 201MB unused partition (the logical one) with existing NTFS partition ?

Is it a option to consider?

What do you guys think of:

I was told about another option of EXTEND. Please review

How does suspicious Unallocated logical partition shows up suddenly?



Thanks for sharing .

Deleting and/or extending the added extra partition will work, if and only if the disc is converted back to a basic disc again after that deletion/extension; otherwise not.

So the story of conversion comes back, and you have no other place to go without doing it.

And, when the story of conversion comes, then those two terms comes back, destructive conversion and non-destructive conversion.

For a destructive conversion, follow post #83 by jumanji.

For a non-destructive conversion, the only way I can say that is to use the Partition Wizard bootable CD version 4.2.2; which offered this conversion as a free feature. But I dont know how you can get it; that is stopped years ago. Here is the method:

How to Convert Dynamic Disk to Basic Disk | MiniTool Partition Wizard Tutorial

If you buy partitin wizard, then you will get access to this option.

Finally, doing this and that, making multiple threads, avoiding good suggestions and paying attention to easy to look but baseless to work suggestions will not solve this issue. Either you pay heed to what is already stated by jumanji and me, or get the PC to a repair shop. Remember that there is no fix button there, at least for this issue.

Thanks for looking into my issue. I like to share my findings for collective learning of this forum. I am not challenging the folks, who contributed to this thread.

Code:

 
 @jumanji 
Once the original partition structure changed your system became 
unbootable. Lenovo's Partition Structure with "One Key Recovery/Restore " is 
very sensitive and I am sure you have seen many users trying to resize the 
original partitions getting into problems in Lenovo forums.

Code:

 
From Lennovo
 
 
If you made any changes in the partition like (D drive, E drive).
 
 
As if there are any other partition made then the one key recovery(OKR) may 
not work.

As I reviewed the disk conversion strategy, it will disrupt built in one key recovery(OKR). It shows as RED light.

Will some one enlighten me on this subject?

Code:

"Unallocated" is not a partition. It's unallocated space, that would not expect 
it  to show up in Diskpart.

I did research on above quote on this forum that point me to

Tutorials - Partition / Extended : Logical Drives

The post # Post 43 thru 47 resemble my Z580 condition, where 4 partitions & 1 unallocated space is showing up in MBR kind. It booted successfully and showing Disk Management in the post.

It looks like normal to have unallocated space with 4 partitions in Win 7 and some factory install keep it that way.

I'm wondering, why this condition leads to non bootable situation on my Z580?

Thanks for helping

Update 8/20/2015

I did the following DISKMAP using HIRENS_CD. It is not showing 5th partition/unallocated space. It looks like health map.

What do you guys think about it?

Thanks for your insight.