It’s a kind of Swiss Army knife for working with Windows operating system images, both offline and online. I’ll echo Microsoft and say “Always run DISM first, then SFC second, not vice versa.”ĭISM is the Deployment Image Servicing and Management tool. Hence, I am reversing the order of events for this step. Since I wrote the original version of this story, I’ve obtained direct advice from Microsoft that it’s best to run DISM before running the System File Checker, a.k.a. Step 1: Using DISM and SFC for system repair See my article “ How to make a Windows 10 or 11 image backup” for instructions.
That will allow you to rewrite that drive and restore your system to normal operation should anything go wrong with your changes or repairs. The important thing is to use a backup tool that creates an image backup of your boot/system drive. Back it up before you lose it!Īny time you make major changes to a Windows system, such as installing a major application suite like Microsoft Office or performing an OS upgrade or repair, it’s a good idea to begin that process with a complete backup.
Thus, the most important bit of advice I can dispense for those who must venture beyond Step 1 is this: make a complete backup of your system to provide a source for files and information that might otherwise go missing. Some steps involve additional work to restore the prior state of your PC more or less back to where it was prior to taking that step. The amount of time and effort required for each step goes up incrementally. (The only remaining step at that point would be to replace the system on which the software is running, and that’s outside the scope of this story.) Keep working through the steps in order until you reach the end, and you are bound to fix the vast majority of problems. If that doesn’t fix what’s broken, advance to the next step. The idea is to first try the initial step in the sequence.
That said, most of these approaches also work with Windows 7 and 8 (with slight variations), and the advice here applies almost identically to Windows 11, which Microsoft is gradually rolling out to Windows 10 users whose hardware can support the new OS via Windows Update from October 2021 into early 2022. I’ve now updated it for the latest versions of Windows 10.
I initially wrote this story in 2016, but as Windows 10 has evolved over time, some of the steps have changed a bit. When that happens, users would be well advised to break out the following routine to help them set things back to rights. This often takes the form of worsening performance or stability, and can originate from damage to, loss of, or corruption of Windows system files typically found in the C:\Windows folder hierarchy. Sometimes a Windows 10 system starts misbehaving to the point where repair is needed.
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