Windows 7 Forums

Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: No Default Operating System in Startup and Recovery dialog Win 7

30 Dec 2011   #1
Toddwmac

Win 7 64
 
 
No Default Operating System in Startup and Recovery dialog Win 7

Greetings;

Win 7, SP1, multi proc dell, one physical drive 2 partitions, nether marked as active

I'm 2 days into recovering from a Trojanos Alureon virus. Using this Encyclopedia entry: Trojan:DOS/Alureon.A - Learn more about malware - Microsoft Malware Protection Center

All is pretty good but when trying to troubleshoot a (related?) IE hijack issue, and going into safe boot, I found I could not get back to normal boot. It just stayed in Safe. I eventually replaced some boot files from a backup and it got back to normal.

I saw that there was not OS listed in MSConfig and none listed in the Startup and Recovery dialog.

No partitions are marked as active. I've tried to use the disk managment utility in Computer Managment to set the OS partition as active but I get an IO error.

Any suggestions appreciated
Thanks


My System SpecsSystem Spec
.

30 Dec 2011   #2
Arc

Microsoft Community Contributor Award Recipient

Microsoft Windows 10 Pro Insider Preview 64-bit
 
 

You should try the method two or method three of the tutorial Partition - Mark as Active then.
My System SpecsSystem Spec
30 Dec 2011   #3
theog

Microsoft Community Contributor Award Recipient

ME/XP/Vista/Win7
 
 

Download the liveCD & Run, this is a free tool from MS:
http://www.sevenforums.com/tutorials...per.html?ltr=M

Than
information   Information
Boot up using the Startup Repair CD or Windows 7 DVD. (not the OEM manufacturer's Recovery Disk) If you have a Netbook, you will need a CD/DVD drive.
NOTE: Make sure no USB drives are plugged in.
Do not use a USB Pendrive for Startup Repair.
startup repair disc-create


1) Use the Rebuild BCD in this tutorial:
How to use the Bootrec.exe tool in the Windows Recovery Environment to troubleshoot and repair startup issues in Windows

-startup-repair-4.png -startup-repair-5.png

2) Restore MBR.

-startup-repair-6.png


My System SpecsSystem Spec
.


30 Dec 2011   #4
Toddwmac

Win 7 64
 
 

Thanks a lot guys-

I tried the Bootrec tool and it does not see Windows on my C: drive... only on a recovery drive.
I will try the cmd prmpt approach from Arc in a few minutes.

In looking at all the posts on the virus I had, I'm thinking a complete burn down is my best option.

As I'm typing and looking over at Computer Managment console on the bad machine, I see a little 2 MB partition that is marked active. It will not let get any info on it or let me do anyting to it. Looks like more reason to do a complete wipe.

Does the Win 7 install disk (non OEM) has all the tools to do a secure wipe and rebuild of an entire disk (only 1TB)?
My System SpecsSystem Spec
30 Dec 2011   #5
Arc

Microsoft Community Contributor Award Recipient

Microsoft Windows 10 Pro Insider Preview 64-bit
 
 

Quote   Quote: Originally Posted by Toddwmac View Post

As I'm typing and looking over at Computer Managment console on the bad machine, I see a little 2 MB partition that is marked active. It will not let get any info on it or let me do anyting to it.
It would be better to understand if you post a full screen snipshot of your disk management window. Generally the active partition is a 100MB NTFS primary partition.


Quote   Quote: Originally Posted by Toddwmac View Post
Does the Win 7 install disk (non OEM) has all the tools to do a secure wipe and rebuild of an entire disk (only 1TB)?
Yes ! Disk - Clean and Clean All with Diskpart Command

For your reinstallation, SSD / HDD : Optimize for Windows Reinstallation .
My System SpecsSystem Spec
30 Dec 2011   #6
theog

Microsoft Community Contributor Award Recipient

ME/XP/Vista/Win7
 
 

information   Information
We always assume you have made your Recovery Disks using the OEM manufacturer's Recovery Media Creator app the first day you had your new PC.
& made the Startup Repair CD.
startup repair disc-create


Did you make the DELL OEM manufacturer's Recovery Disks?
My System SpecsSystem Spec
30 Dec 2011   #7
Toddwmac

Win 7 64
 
 

No Oem recovery... it was a vista machine originally

Attached is a snip of the disk window.


Attached Thumbnails
-capture.jpg  
My System SpecsSystem Spec
30 Dec 2011   #8
Arc

Microsoft Community Contributor Award Recipient

Microsoft Windows 10 Pro Insider Preview 64-bit
 
 

In this situation, I think you are right. You should wipe up your entire disk , and go for a clean install then . The steps you should follow in order to do it are ...

To wipe up the hard disk .. Disk - Clean and Clean All with Diskpart Command

To optimize the disk for reinstall ... SSD / HDD : Optimize for Windows Reinstallation .

For the installation .... Clean Install Windows 7 .

Before wiping up the disk, better you back up your data externally .
My System SpecsSystem Spec
30 Dec 2011   #9
Toddwmac

Win 7 64
 
 

Thanks guys....
I hit the button of no return.... clean all just few minutes ago....
now I'll wait for 3 hours and read some of the words of wisdon here on the forum.

If nothing else, I'll have a nice clean Win 7 machine when I'm done.

Cheers
My System SpecsSystem Spec
30 Dec 2011   #10
Arc

Microsoft Community Contributor Award Recipient

Microsoft Windows 10 Pro Insider Preview 64-bit
 
 

Quote   Quote: Originally Posted by Toddwmac View Post
If nothing else, I'll have a nice clean Win 7 machine when I'm done.

Cheers
We hope so ! Best of luck
My System SpecsSystem Spec
Reply

 No Default Operating System in Startup and Recovery dialog Win 7




Thread Tools





Similar help and support threads
Thread Forum
Operating system does not show up in System Recovery Options
Hey guys. I have an Acer laptop with Windows 7 that has crashed and will not boot. I do not have a Windows 7 CD nor do I have the money to pay for one. When my computer boots up, it says "BOOTMGR IS MISSING" and I press Ctrl+Alt+Delete and it loops back around to that page. I created a System...
General Discussion
Default Operating System - Change Default Boot OS
How to Change the Default Operating System to Start in Windows 7 and Vista If you dual boot with one or more operating systems installed other than Windows 7 or Vista, then this will show you how to change the default operating system to start in the Windows Boot Manager. You must be logged...
Tutorials
Default operating system list not found
I played around with a software( paragon portion manager) that installed its own boot loader for my dual boot laptop and after restoring back to its former settings, whenever I go to system properties and click on start up and recovery and then settings under the default operating system ther's...
General Discussion
operating system not found in system recovery
Hello everyone, I am trying to do a system restore from the install disc because I can't boot. I followed this tutorial: http://www.sevenforums.com/tutorials/668-system-recovery-options.html using method two. At step 5, the only operating system listed is Vista (which I don't have and never have...
Backup and Restore
No Default Operating System
I have an Asus K60I, and when I start it up, a message appears telling me to choose an operating system, and gives me two choices... 1)Boot Client OS 2)Boot MRI PE When I go to advanced system settings -> startup and recovery-> there is nothing listed under Default operating system, and...
General Discussion
operating system not found - recovery
I shrinked my hdd today because I was going to setup a 3rd os on my new dell laptop. After rebooting it said that the os was not found which is fine because my dell has a recovery partition. I tried to boot to that but couldn't because what Im finding out is that the MBR needs to be in tact to be...
Installation & Setup

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 12:58.

Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App