Windows · Office · Apps troubleshooting
When your PC acts up, start here.
Type the error code or describe what went wrong. Every guide starts with the safest fix first and tells you exactly when to move on to the next step.
C:\> sfc /scannow
Verification 100% complete.
! found corrupt files, repaired some
C:\> DISM /Online /Cleanup-Image /RestoreHealth
[==========100.0%==========]
✓ The restore operation completed successfully.
C:\> _
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MS Word tips and tricks: 17 ways to work faster in Word
Practical Microsoft Word tips and tricks: faster selecting and editing, styles, Format Painter, Navigation pane, automatic contents, Track Changes, Dictate, Quick Parts…
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Dell BitLocker recovery key: where to find it and why it appears
Dell laptop asking for a BitLocker recovery key? Find it in your Microsoft or work account, learn why BIOS updates trigger it,…
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0xC1900101 – 0x20017: how to fix the SAFE_OS boot error
Windows upgrade failed with 0xC1900101 – 0x20017 in the SAFE_OS phase? Unplug extra devices, update drivers and BIOS, remove third-party encryption, find…
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How to stop OneDrive from syncing (without losing files)
Pause OneDrive for a few hours, stop syncing some folders, turn off Desktop and Documents backup, or unlink the PC completely, without…
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Monitor no signal: how to fix it
Monitor says No Signal? Check the input source and cable, use the graphics card ports, reset the graphics driver, undo a bad…
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How to install a CAB file in Windows 11 and 10
How to install a CAB file in Windows 11 and 10: use DISM or PowerShell for update packages, expand and Device Manager…
How every guide is built
01 / THE EXACT PROBLEM
We start from the error message or symptom you actually see, and explain what causes it in plain words.
02 / SAFEST FIX FIRST
Quick, low-risk steps come first. Anything that changes system settings comes later, with a warning.
03 / WHERE IT APPLIES
Each guide says which Windows or app versions it covers, so you don’t follow steps meant for a different system.
04 / KEPT CURRENT
When Windows or Office changes, guides are reviewed and the update date is shown at the top.