Win7 sfc-scannow

Windows 7: SFC /SCANNOW Command - System File CheckerRecommended Fix: Download Here

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SFC /SCANNOW Command - System File CheckerHow to Repair Windows 7 System Files with System File CheckerPublished by Brink09 Jan 2009

How to Repair Windows 7 System Files with System File Checker

OPTION ONE To Run the SFC /SCANNOW Command at Boot

1. For how, see METHOD TWO at this link: SFC /SCANNOW : Run in Command Prompt at Boot

Published by

Brink

Information

The sfc /scannow command (System File Checker) scans the integrity of all protected Windows 7 system files and replaces incorrect corrupted, changed/modified, or damaged versions with the correct versions if possible.

Tip

If you get the Windows Resource Protection Could Not Start the Repair Service error when trying to run SFC, then make sure that the Windows Modules Installer service is enabled and set to Manual.

Services - Start or Disable

Warning

Be aware that if you have modified your system files as in theming explorer/system files, running sfc /scannow will revert the system files such as explorer.exe back to it's default state. Make the appropriate backups of your system files that you have modified for theming if you wish to save them before running sfc /scannow.

Note

Using OPTION TWO below is recommended if able.

If you would like to get help with your SFC issue, then be sure to upload and attach your sfcdetails.txt

Submit

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OPTION TWO To Run the SFC /SCANNOW Command in Windows 7

1. Open an "elevated command prompt" (right click -> Run as administrator), and do step 2 or 3 below for what type of scan you would like to run.

2. To Scan and Repair System FilesNOTE: Scans the integrity of all protected system files and repairs the system files if needed. Please see red WARNING box at the top of this tutorial.

A) In the elevated command prompt, type sfc /scannow and press Enter. (see screenshot below)NOTE: This may take a little bit to finish.

B) Go to step 4.

3. To Only Verify if the System Files are CorruptedNOTE: Scans and only verifies the integrity of all proteced system files only. This command will not change your system files as in the red WARNING box at the top of this tutorial.

A) In the elevated command prompt, type sfc /verifyonly and press Enter.

4. When the scan is complete, hopefully you will see all is ok like the screenshot below.

file from OPTION THREE below in your post.

Note

If SFC could not fix something, then run the command again to see if it may be able to the next time. Sometimes it may take running the sfc /scannow command 3 or more times to completely fix everything that it's able to. If not, then download and run the 32-bit (x86) or 64-bit (x64) System Update Readiness Tool foryour same installed 32-bit or 64-bit Windows 7, restart the PC afterwards, and try the sfc /scannow command again. If still not, then try using OPTION ONE above to run the sfc /scannow command at boot. If still not, then you can attempt to run a System Restore using a restore point dated before the bad file occured to fix it. You may need to repeat doing a System Restore until you find a older restore point that may work. If still not, then you can use the steps in the TIP box in the OPTION THREE section below to manually replace the files that SFC could not fix if there are not to many fix. If there are to many files to manually fix, or you prefer not to use OPTION THREE below, then you could do a repair install without losing anything.

If you would like to get help with your SFC issue, then be sure to upload and attach your sfcdetails.txt



5. When done, close the elevated command prompt.

OPTION THREE How to See and Read Only the "SFC" Scan Results from the CBS.LOG

1. Open an "elevated command prompt" (right click -> Run as administrator).

2. In the elevated command prompt, copy and paste the command below, and press Enter. (See screenshot below)NOTE: This will place a sfcdetails.txt file on your desktop with only the SFC scan result details from the CBS.LOG in it.

Code:

3. Close the elevated command prompt.

4. Open the sfcdetails.txt file on your desktop to see the SFC scan details in the CBS.LOG.

5. You can safely delete the sfcdetails.txt file afterwards if you like.

That's it,Shawn

file from OPTION THREE below in your post.

Note

When SFC runs, it logs it's actions into the C:\Windows\Logs\CBS\CBS.log. The steps in this option will show you how to see only the specific SFC entries with the [SR] tags in this CBS.log. This can be helpful toshow you what files SFC could not fix automatically if you wanted to try and manually replace them.

findstr /c:"[SR]" %windir%\Logs\CBS\CBS.log >"%userprofile%\Desktop\sfcdetails.t

Tip

If you need to replace a corrupted system file that SFC cannot fix, then this will show you how to by extracting a new copy directly from your Windows 7 installation DVD.

Extract Files from Windows 7 Installation DVD



Related Tutorials

How to Run the System File Checker in a Command Prompt at BootHow to Do a System Restore in Windows 7How to Do a Repair Install to Fix Windows 7How to Run Disk Check in Windows 7How to See Windows 7 Reliability and Problem History with Reliability MonitorHow to Extract Files from the Windows 7 Installation DVDHow to Troubleshoot a Problem by Performing a Clean Startup in Windows 7 or Vista

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18 Jan 2009 #1

shadowminx69

Windows 7 Build 7000

26 posts

would it be a bad Idea to make a task to run this each night? not sure if it would be a good Idea or not. Hit me back

Tip: Download Windows Repair Tool

My System Specs

.

18 Jan 2009 #2

Romulinx2

Win7 Ultimate x64 on Desktop / Win7 Ultimate x86 on

laptop / Win7 x86Starter on Netbook

1,020 postsUK

Thanks, I forgot about this. I used to use it in early editions of windows. Run it and sorted some errors.

My System Specs

18 Jan 2009 #3

darkassain

Windows 7 Ult x64(x2), HomePrem x32

(x4), Server 08 (+VM), 08 R2 (VM) , SuSe 11.2 (VM), XP

32 (VM)2,959 postsIn a ∞ Portal

you shouldnt have any problem with it...

Quote: Originally Posted by shadowminx69

would it be a bad Idea to make a task to run this each night? not sure if it would be a good Idea or not. Hitme back

My System Specs

18 Jan 2009 #4

Brink

Download PC Repair Toolspiceworks.comNetwork Management Software & IT Tools for Free. Download Now!

Service Unavailable

HTTP E 503 Th i i il bl



64-bit Windows 8.1 Enterprise

54,445 postsTexas You're welcome Romulinx2.

Shawn

Quote: Originally Posted by Romulinx2

Thanks, I forgot about this. I used to use it in early editions of windows. Run it and sorted some errors.

My System Specs

07 Feb 2009 #5

thunder2008

Windows 7 RC 710093 posts

Very useful information running the sfc atm, thank you for this thread.

My System Specs

07 Feb 2009 #6

Brink


54,445 postsTexas

You're welcome Thunder2008.

My System Specs

01 Mar 2009 #7

anykey

Dual boot XP Pro and Seven/7127124 posts

sarf west London

Good to see this again.Thanks for the reminder.

Didn't you used to put some letters/codes as a suffix, something such as /* or /?. This was to fix things.

My System Specs

01 Mar 2009 #8

Brink


54,445 postsTexas

Hello Anykey,

You could type sfc /? in the elevated command prompt for a complete list of sfc commands to use, but sfc /scannow is the best option to scan and repair all protected system files command. No other suffixes that I know of though.



My System Specs

01 Mar 2009 #9

anykey

Dual boot XP Pro and Seven/7127124 posts

sarf west London

Thanks Brink, perhaps I am thinking of the old chkdsk.I was always taught to do it something like this:

chkdsk /f /r /v /e

My System Specs

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