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Windows 7: Cannot Boot to Windows/ BOOTMGR Missing/ Partition problem

12 Sep 2012   #1

Windows 7 Home Premium 64 Bit
Cannot Boot to Windows/ BOOTMGR Missing/ Partition problem

Ok... so i cannot boot my Windows 7 64 bit Dell Studio 1558.

Problem :: Cannot boot to Windows.


Description ::
1. Initally had two partitions .. C and D ..
2. Tried to merge C and D to make C more by using Partiton Wizard.
3. Computer Restarted.
4.BSOD at Starting windows logo
5. Stuck at boot.
6. Launched Windows repair.
7. Unable to do repairs.
8. Dell restore unable to locate present installation. ( "current installation : (Unknown) at Unknown drive)
9. Checked partitions using DISKPART at command prompt.
10. Tried to change active partition . Restarted.
11. BOOTMGR MISSING ERROR. Dont even go to startup repair.
12. DVD DRIVE of LAPTOP NOT WORKING so made Windows Startup repair USB bootable.
13. Now have Access to Recovery Menu.
14. Made Partition Wizard Bootable USB . Now have access to Partition Wizard Also.
15. Tried installing Windows 7 using USB. Got error "installation error. verify windows sources are accessible Windows 7 Instalation Problem - Error Code 0xC0000005‎" .
16. Stuck at boot now.

Please advise how to get out of this situation. I checked OS drive in partition wizard bootable , it is intact..Windows installation is there....Every drive is ok but somehow booting not from that drive... I will attach photographs of Partition Wizard Partiton status.

Please help.

My System SpecsSystem Spec
12 Sep 2012   #2

Windows 7 Home Premium 64 Bit

My System SpecsSystem Spec
12 Sep 2012   #3
Debbie B

Windows 7 Enterprise x64


It seems like there might be something physically wrong with the hard drive or RAM.I would recommend running Dell Diagnostics. In order to run Dell Diagnostics from Hard Drive, follow the mentioned steps:
Restart your computer. When the DELL™ logo appears, tap <F12> immediately. In the boot device list, highlight Boot to Utility Partition and press <Enter>. Under Dell Diagnostics Main Menu (see Dell Diagnostics Main Menu), select the extended test. If you get any error code, make a note of the error code.

You can even follow the below mentioned steps:
Disable any security software before attempting to upgrade or do a clean install.
Make sure your computer is updated (devices and applications)
Disconnect any external devices before installing.
Check your hard disk for any errors:
Click Start
Type: CMD, from the results, right click CMD
Click 'Run as Administrator'
At the Command Prompt, type: chkdsk /r
When you restart your system, your computer will be scanned for errors and attempts will be made to correct them.

In case you are able to boot your system in windows, then I would recommend running “Oxc0000005 Repair Tool” from the URL mentioned:

Kindly revert and let us know the status.
My System SpecsSystem Spec


 Cannot Boot to Windows/ BOOTMGR Missing/ Partition problem

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