How to

Turn Bluetooth on or off in Windows 11 from Quick Settings, Settings > Bluetooth & devices, or Device Manager, plus fixes when the Bluetooth toggle is missing.

Hide chart series with no data in Excel: filter out empty source rows, use NA() formulas, run a short VBA macro, or build dynamic named ranges. Steps and fixes.

Turn off notifications in Windows 11 under Settings > System > Notifications, or in Windows 10 under Notifications & actions. Plus one app, sounds and browsers.

Add toolbar-style shortcuts in Windows 11: the taskbar Toolbars menu is gone, so pin apps and folders, use Quick access, Start folders and the Edge favorites bar.

Set or change default programs in Windows 11/10 by file type, link type or app, from Settings or Open with. Covers reset, work PCs and defaults that revert.

Access the Microsoft 365 admin center at admin.microsoft.com with an admin work account. Sign-in steps, the Teams and Entra portals, roles and access-denied fixes.

TPM 2.0 and Secure Boot protect keys and the startup chain on Windows. Check both with tpm.msc, msinfo32 and Device security, then turn them on in UEFI.

Set up a Google Chromecast by plugging it into your TV, then using the Google Home app to add it to Wi-Fi. Steps for every model, testing, and fixes.

How to screenshot on Windows 11: press Windows + Shift + S, Windows + PrtScn or Alt + PrtScn. Where each capture is saved and fixes when screenshots fail.

The power button on Windows 11 is in the Start menu: select Start, then Power. Find it on the sign-in screen, Ctrl+Alt+Del, Win+X, Alt+F4 and the PC itself.

Access your USPS LiteBlue account at liteblue.usps.gov with your Employee ID and SSP password. Password and MFA resets, PostalEASE, ePayroll and phishing tips.

Reset Open with settings in Windows 10 by reassigning each file type in Open with or Settings > Default apps. Windows 11 differences, checks and fixes included.