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SYMPTOM GUIDE

Wi-Fi, network and file synchronization problems

Diagnose internet connection, OneDrive sync and network printing problems. Separate a device-wide connection failure from an error in one application.

Choose the right starting point

  1. Check whether all apps or only one app cannot connect.
  2. Record the error or sync icon state.
  3. Protect unsynced files before resetting network or sync settings.
Check your product and version →

Guides for this symptom 20

General troubleshooting guides are distinct from reports of a known issue affecting a specific version. Check the conditions in each article.

▦Inkjet / laser printer (Brother, Epson)Troubleshooting guide

Printer outputs blank pages after an ink or toner change: packing material, seating, nozzle check and the new-supply test

Every page comes out completely blank right after a new ink or toner cartridge was installed

Pages come out completely blank, or one or more colors are missing, immediately after replacing an ink cartridge, ink bottle, toner cartridge or drum unit (worked through the published procedures for Brother inkjet and laser machines and Epson inkjet printers, which follow the same order on other makes)
Checked 2026.09.19Read guide ↗
▦Windows 11 power mode / energy saver, laptop maker power profiles (Lenovo Intelligent Cooling)Troubleshooting guide

Laptop is slow only on battery: check the power mode, energy saver and the maker's cooling mode in that order

The same work becomes slower the moment the power adapter is unplugged: lower frame rates, longer exports, sluggish response

Windows 11 (energy saver on 24H2 and later, battery saver on 24H1 and earlier and on Windows 10). Lenovo ThinkPad Intelligent Cooling user guides are used as the published example of the maker side
Checked 2026.09.19Read guide ↗
▦Windows 11 and Windows 10 PCs with memory integrity (core isolation) on in Windows Security, or where turning memory integrity on reports incompatible driversTroubleshooting guide

A driver can't load on this device: what memory integrity is blocking, and the choices that leaves

A notification says a driver can't load on this device, without naming the hardware

Microsoft's support pages cover the meaning of the notification, why memory integrity ends up turned off, and the four hardware security capability messages shown on the Device security page in Windows Security. No build-specific differences are given. The pages were read on 2026-09-21.
Checked 2026.09.21Read guide ↗
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