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: Windows failed to start and can't find operating system


22 Nov 2011   #21

Windows 7 Home Premium 64 Bit
 
 

You can get http://www.ultimatebootcd.com/download.html and use parted magic's subprogram TestDisk to repair it. The step by step guide is TestDisk Step By Step - CGSecurity

It is a somewhat complicated process, but it is all laid out there for you to use.

Edit: updated the site to get ultimatebootcd. The downloads are in the mirrors at the bottom of the page.

My System SpecsSystem Spec
.

22 Nov 2011   #22

Windows 7 Home Premium 32bit
 
 

Right now I pretty much have no idea what's going on, but guessing from what Diskpart says about Disk 0 I'm thinking what I did made my problem worse (no partitions?! where did C go?):

LIST DISK

Disc # / Status / Size / Free / Dyn / Gpt
Disk 0 / Online / 232 GB / 232 GB
Disk 1 / No Media / 0 B / 0 B

DETAIL DISK

Disk ID: 06094833
Type: SATA
Status: Online
Path: 0
Target: 0
LUN ID: 0
Location Path: (not going to type this unless it will be useful)
Current read-only state: No
Boot Disk: No
Pagefile disk: No
Hibernation file disk: No
Crashdump disk: No
Clustered disk: No

There are no volumes.

SEL DISK 0 -> LIST PART

There is no partitions on this disk to show.

writhziden, do you still recommend trying TestDisk?
My System SpecsSystem Spec
22 Nov 2011   #23

Windows 7 Home Premium 64 Bit
 
 

I highly recommend trying TestDisk. I helped someone with a similar problem on an external drive earlier in the week, and I found that a partition recovery tool is the only possibility of recovering the lost partition (and in this case, the operating system as well).
My System SpecsSystem Spec
.


22 Nov 2011   #24

Windows 7 Home Premium 64 Bit
 
 

Quote   Quote: Originally Posted by silvergreen View Post
Right now I pretty much have no idea what's going on, but guessing from what Diskpart says about Disk 0 I'm thinking what I did made my problem worse (no partitions?! where did C go?)
Basically, it appears your partitions were deleted. TestDisk should be able to pick the partitions up that were deleted and recover the partitions.

Edit: The nice thing about having deleted the partitions, since you never reformatted the drive, everything is still on there and TestDisk should be able to recover the partition as NTFS instead of the RAW (unformatted) partition. Under no circumstances should you format your drive. That is imperative.
My System SpecsSystem Spec
22 Nov 2011   #25

Windows 7 Home Premium 32bit
 
 

I'm planning to try TestDisk, but before I do that: can anyone please explain in simple terms what happened after I ran those commands in Diskpart? Before I had a rough understanding of what the results were saying - the C drive was there, but the computer couldn't recognize it because it was RAW, it was 232GB, etc. Now after running those commands I have NO clue why Disk 0 doesn't have any partitions or volumes or why it says C is Removable and has a No Media status...or why I got that "no bootable sectors" message. I'm not a tech person at all, so maybe this will teach me to run commands I don't understand, but I'd really appreciate any insight that can help me understand the current situation. What went wrong?
My System SpecsSystem Spec
22 Nov 2011   #26

Windows 7 Home Premium 64 Bit
 
 

Quote   Quote: Originally Posted by silvergreen View Post
I'm planning to try TestDisk, but before I do that: can anyone please explain in simple terms what happened after I ran those commands in Diskpart? Before I had a rough understanding of what the results were saying - the C drive was there, but the computer couldn't recognize it because it was RAW, it was 232GB, etc. Now after running those commands I have NO clue why Disk 0 doesn't have any partitions or volumes or why it says C is Removable and has a No Media status...or why I got that "no bootable sectors" message. I'm not a tech person at all, so maybe this will teach me to run commands I don't understand, but I'd really appreciate any insight that can help me understand the current situation. What went wrong?
My guess is that since you did the third of the three steps first, it corrupted the boot data and deleted your partition. Then running all three again was unable to recover that corruption. I may be wrong, but this is my guess.

Edit: Deleted your partition is probably wrong. I think it hid the partition somehow. Anyway, I need to make a run to the store to pick up some last minute items for Thanksgiving. I'll be back to check on your progress with TestDisk. Good luck!
My System SpecsSystem Spec
22 Nov 2011   #27

Microsoft Community Contributor Award Recipient

Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
 
 

diskpart didn't screw up your disk. Those commands are display commands only.
Writing a new mbr and bootsector shouldn't be a problem as well. Maybe a stupid virus is the problem. try testdisk
My System SpecsSystem Spec
22 Nov 2011   #28

Windows 7 Home Premium 64 Bit
 
 

Quote   Quote: Originally Posted by Kaktussoft View Post
diskpart didn't screw up your disk. Those commands are display commands only.
Writing a new mbr and bootsector shouldn't be a problem as well. Maybe a stupid virus is the problem. try testdisk
I was speaking of this post:

Quote   Quote: Originally Posted by Kaktussoft View Post
Go into recovery environment and start "command prompt"
bootsect /nt60 C: /mbr
bootrec /fixmbr
bootrec/fixboot

post results. Are you able to boot now? C still listed as RAW?
and then this one:

Quote   Quote: Originally Posted by silvergreen View Post
Oh, man....I mistyped the first two lines (accidentally wrote "nbr" instead of "mbr") and didn't realize the commands didn't go through. The third, however (bootrec/fixboot) did.

Then I realized my mistake and retyped the three commands and restarted the computer. Upon restart, I got: "No bootable devices--strike F1 to retry boot, F2 for setup utility. Press F5 to run onboard diagnostics." F1 doesn't do anything; F2 takes me to the BIOS configuration page.

Did I make the problem worse? Is there anything I can do? I can still access the Recovery Options using my recovery disc...but now I am almost missing the original "Windows failed to start" message, which was less terrifying than this one.
I know it was not Diskpart that caused the problem.
My System SpecsSystem Spec
22 Nov 2011   #29

Windows 7 Home Premium 64 Bit
 
 

Silvergreen, what's the status on the TestDisk? Any luck?
My System SpecsSystem Spec
22 Nov 2011   #30

Windows 7 Home Premium 32bit
 
 

Well, it took me a while to run TestDisk (I had to ask for help from a friend) and just rebooted....only to get a new error message:

Windows failed to start. A recent hardware or software change might be the cause. To fix the problem:

1. Insert your Windows installation disc and restart your computer.
2. Choose your language settings, and then click next
3. Click "repair your computer."

Status: 0xc0000000e

Info: The boot selection failed because a required device is inaccessible.


Looks like I'm back where I started...?
My System SpecsSystem Spec
Reply

 Windows failed to start and can't find operating system




Thread Tools




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 09:14 AM.
Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App
  

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33