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Windows 7: SFC /SCANNOW : Run in Command Prompt at Boot


23 Jan 2011   #29
Bare Foot Kid
Microsoft MVP

W 7 64-bit Ultimate
 
 
SFC /SCANNOW : Run in Command Prompt at Boot

How to Check / Repair the Windows System Files from a Command Prompt at Boot

This shows how to start the PC and open a command prompt at boot so the Windows system files can be checked and repaired if possible, if the PC will not start...


My System SpecsSystem Spec
10 Oct 2012   #30
JDobbsy1987

Windows 8.1 Pro x64
 
 

Hi,

Does anyone know how i would go about doing this when the laptop is encrypted with truecrypt?
Boot to the CD happens before entering the truecrypt password so windows can't see the file system?

If i leave it until passed the truecrypt password prompt then it doesn't give me the option to boot to CD.

I could just flatten it and re-install windows fresh but wouldn't have minded giving this ago.

Regards,
Jamie


My System SpecsSystem Spec
10 Oct 2012   #31
JDobbsy1987

Windows 8.1 Pro x64
 
 

Scrap that, i have now managed to get in Safe Mode
My System SpecsSystem Spec
12 Nov 2012   #32
powwow

Windows 7 x32
 
 

Great tutorial
Was searching for a very long time
thank u very much bro !!
My System SpecsSystem Spec
15 Jan 2013   #33
marso

Win 7 Home Premium 64 bit
 
 

Great to find such easy instructions. Thanks
My System SpecsSystem Spec
.


09 Mar 2013   #34
bital

Windows 7 Ultimate x64
 
 

I tried both your method a hundred times but it says Windows Resource Protection could not perform the requested operation everytime. Please help!
My System SpecsSystem Spec
09 Mar 2013   #35
marsmimar

Microsoft Community Contributor Award Recipient

Win 7 Pro 64-bit
 
 

Quote   Quote: Originally Posted by bital View Post
I tried both your method a hundred times but it says Windows Resource Protection could not perform the requested operation everytime. Please help!
Hello bital and welcome to Seven Forums.

When you get the message that Windows Resource Protection could not perform the requested operation, it means that there are some system files that could not be repaired/replaced. As it says at the beginning of the tutorial, "This shows how to start the PC and open a command prompt at boot so the Windows system files can be checked and repaired if possible..."

If you look at option three in this tutorial, it gives information on how to find out which files could not be repaired/replaced. It also provides info on how to manually replace those files.

Personally, I find option three to be time consuming. I prefer going right to a Repair Install. It takes about an hour to run and it tries to repair the operating system while preserving your user accounts, data, programs, system drivers, etc. If it finishes successfully you'll have to reinstall Windows Updates which could take more than an hour. If a repair install doesn't fix things you may have no recourse but to do a Clean Install.

Clean Install Windows 7

Clean Reinstall - Factory OEM Windows 7
My System SpecsSystem Spec
29 Apr 2014   #36
Jackie1

windows 7 64 bit
 
 

When I try this, I'm getting: There is a system repair pending which requires reboot to complete. Restart Windows and run SFC again. Everytime I try, same thing... I can't boot, in normal mode, or any safe mode, and want to try this next. Ideas?
My System SpecsSystem Spec
23 May 2014   #37
jchap1590

Windows 7 Ultimate, 64-bit
 
 
missing step?

I'm surprised no one mentioned this in the comments.. unless I'm misunderstanding something

Windows does not assign a volume letter to the System Reserved partition (bootdir) by default, for various reasons. In light of this, and seeing as the /offbootdir switch only accepts volume letters and not volume numbers; I believe the following should be added between Method 2, steps 3 and 4:




can someone clarify? maybe I am just confused about the boot directory and windows directory
My System SpecsSystem Spec
08 Aug 2014   #38
looked

Windows 7 Ultimate x64
 
 

Method 1 didn't work for me.
I can see from the first page the picture shows the prompt at X:\windows\system32> but when I loaded the dos windows I had x:\ something different so the command didn't work, I received "Windows Resource Protection could not start the repair service".
My System SpecsSystem Spec
08 Aug 2014   #39
Golden

Microsoft Community Contributor Award Recipient

Windows 7 Ult. x64 Windows 8.1 x64
 
 

Do a :

Code:
cd\windows\system32
Then run sfc /scannow
My System SpecsSystem Spec
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 SFC /SCANNOW : Run in Command Prompt at Boot




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