Second monitor not detected on Windows 11: how to fix it
Plugged in a second monitor and it shows “no signal”, or Windows doesn’t recognize it? Here’s the fix: cable and input, Detect, Windows + P, the graphics driver and USB-C.
Tutorials Page 4
Detailed tutorials with screenshots of the error and the right setting to fix Windows, network, phone and app problems.
How to set up a router as a repeater (TP-Link, Mercusys and others)
Got a spare router? Here are three ways to use it to extend your Wi-Fi — repeater mode, WDS bridging or a wired access point — and which one gives the best results.
Laptop keyboard not working (some keys, or letters typing numbers): how to fix it
Laptop keyboard stopped working, some keys don’t respond or letters type numbers? Here’s how to fix it: Num Lock, Filter keys, keyboard layout and driver.
Microphone not working on Windows 11 (Teams, Meet, Zoom): how to fix it
Nobody can hear you in meetings? Here’s how to allow the microphone in Windows privacy settings, choose the right device and fix it in Teams, Meet, Zoom and Discord.
OneDrive not syncing: how to fix it on Windows
Files stuck with sync arrows, a red X on a folder or error 0x8004de40? Here are the most common reasons OneDrive stops syncing and how to fix them.
Excel not responding or won’t open: how to fix it
Excel freezing with “Not Responding”, taking forever to open, or saying the file format or extension isn’t valid? Here’s how to fix it and recover your file.
Error 0x8000FFFF (catastrophic failure) on Windows: how to fix it
Error 0x8000FFFF shows up in Windows Update, the Microsoft Store, System Restore or when copying files. Here’s what it means in each case and how to fix it.
Error 0x80004005 (unspecified error): how to fix it
Error 0x80004005 shows up when opening network folders, extracting compressed files or updating Windows. Here’s the cause in each situation and how to fix it.
Bluetooth not showing up on Windows 11: how to fix it
Did the Bluetooth button disappear, or isn’t it even in Device Manager? Here’s how to re-enable the adapter, the service and the driver, step by step.
External hard drive or SSD not showing up on Windows: how to fix it
Your external drive or new SSD isn’t showing up in File Explorer? Find out which case you have — no drive letter, not initialized, unallocated or RAW — and fix it without losing data.
No sound on Windows 11: how to fix it
Sound stopped working on your PC or laptop, sometimes right after an update? Here’s what to check first and how to fix it step by step — from the output device to the driver.
How to password-protect a PDF, Word or Excel file and a folder in Windows
Here’s how to password-protect Word and Excel documents, create a password-protected PDF without paid software, protect a folder in Windows (with an encrypted ZIP or BitLocker) and the precautions to avoid losing access.