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: Startup repair menu doesn't see an operating system

19 Mar 2012   #51
Microsoft MVP


It means the installer is bad if it's requesting DVD drivers.

How are you planning to activate Win7?

If you don't have a Win7 Product Key to activate, perhaps we can help you repair or reinstall Vista which came with the laptop.

My System SpecsSystem Spec
19 Mar 2012   #52

Windows 7 32 bit

What if it didnt come with one?
My System SpecsSystem Spec
19 Mar 2012   #53

Windows 7 Pro x64 Windows 10 Pro x64

Then you would have to purchase one.
My System SpecsSystem Spec

19 Mar 2012   #54

Windows 7 32 bit

yeah i happened to get one off my friend
My System SpecsSystem Spec
19 Mar 2012   #55
Microsoft MVP


In that case we cannot help you unless you want to buy a Win7 license or reinstall Vista that came preinstalled on the machine.
My System SpecsSystem Spec
19 Mar 2012   #56

Windows 7 32 bit

can you help reinstalling the vista that came preinstalled?
My System SpecsSystem Spec
19 Mar 2012   #57
Microsoft MVP


Do you have the Vista installation DVD with SP2 for your licensed version? You can borrow or seach online for one. If you use a torrent then make sure to get a clean copy without anything added.

Then follow the steps given here which are the same as for Win7: Clean Reinstall - Factory OEM Windows 7 - Windows 7 Forums
My System SpecsSystem Spec
11 May 2013   #58

Windows 7 Professional 64-bit

I just found this post on a Google search, and it helped IMMENSELY. I flashed my BIOS to a newer version only to find out that my SATA drive would no longer boot. I had no idea the boot manager would get corrupted from a BIOS update.

Anyways, I followed through your steps, and they worked like a charm. You ROCK gregrocker!
My System SpecsSystem Spec
17 Jul 2013   #59

Windows 7 Pro 64bit

Quote   Quote: Originally Posted by gregrocker View Post
Mark WIn7 active, boot the WIn7 DVD Repair console or Repair CD, click through to Recovery Tool list to run Startup Repair up to 3 separate times with reboots.

To mark Win7 active, press Shift F10 at first screen when booting DVD or Repair CD, or choose Command Line from Repair Console's Recov Tools list, type:

SELECT DISK 0 (confirm from list this is WIn7 HD #)
SELECT PARTITION # (replace # with WIn7 part #)

Now return to Recov Tools list to run Startup REpair up to 3 separate times with reboots to write MBR to Win7.
Years later and your post is still coming in handy to people Gregrocker. I had to register to say thanks!

I installed windows 8 on a new partition next to my main windows 7 partition so I could dual-boot and test out the new Windows. For whatever reason after installing windows 8, the windows 7 OS was no longer seen in the boot manager.
After playing with Windows 8 and for various reasons, I decided to get rid of it. I stupidly didn't bother trying to figure out how to fix the issue of my windows 7 OS not showing up in the boot manager before I deleted the windows 8 partition.

So after deleting it, I ran into obvious issues when I tried to boot up my computer. It kept trying to boot into the non-existent windows 8.

I had absolutely no clue what to do aside from sticking my windows 7 disc in and formatting my main partition and starting new. Something I really, really did not want to do.

By a fluke I came across this thread and your post.

After following the instructions and restarting (and crossing my fingers), the computer booted into windows 7 with no issues at all.
You really saved me a lot of time and headache.

Can't thank you enough
My System SpecsSystem Spec
17 Jul 2013   #60
Microsoft MVP


Glad to help, Bob. Thanks for letting us know.

The thread is so old the post contained no links to illustrated tutorials which illustrate almost every step given nowadays. I've just updated it so let me know if you think these would have made it even easier for you.
My System SpecsSystem Spec

 Startup repair menu doesn't see an operating system

Thread Tools

Similar help and support threads
Thread Forum
Missing Operating System/Startup Repair Failure
Hi, I apologize if this isn't the right subforum but I saw a couple old posts about this in General. Yesterday one of my kittens knocked my laptop off my chair causing it to hit my PC tower on the way to the ground. My tower immediately froze and when I went to restart it manually I...
General Discussion
"Operating system: Unknown" when trying startup repair
Hi, turns out that when i get to this window: Instead of "Operating system: Windows 7" i get "Operating system: Unknown" and when I try to repair startup, it fails, what could...
Performance & Maintenance
how do i Repair or Reinstall operating system
Acer Aspire 17.3 laptop. had black screen with a few words eg. no system. used F10 and now have Windows Boot Manager black page with Windows failed to start and 1,2,3 insert disk and restart. choose Enter and it offers Window 7 Enter or F8. all choices come back to these same 2 pages. Ctrl+Alt+Del...
Installation & Setup
MBR damaged and Win7 System Recovery menu doesn't see an operating sys
Hi everyone, I'll keep it short and to the point. What I had initially: What I did: Now, Problem: MBR got damaged as win XP partition was formatted (which had bootloader) and thus I can't login to win 7 from Ubuntu Grub.
Installation & Setup
Startup repair loop - Can't repair with system restore/repair/commands
Hello, I've been unable to access my custom build computer since around 5:00 yesterday. I chose to restart my computer at around that time just because it was slowing up a little and I usually do that to help, I had not installed any updates or new programs since 2 days ago when there had been a...
BSOD Help and Support

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 17:53.
Twitter Facebook Google+