Service tag · 8 matching pages
Diagnose a previously working second display by checking monitor power and input, cable and port combinations, Windows display detection, dock or USB-C capability, driver changes, and whether one hardware output has failed.
Diagnose Wi-Fi failure that begins after a Windows update by confirming the network still works, checking whether the adapter is detected, reviewing driver changes, and using supported rollback or repair only when the timing supports it.
Diagnose repeated Wi-Fi drops by tracking whether the problem follows one computer, one room, sleep and wake, one band, heavy traffic, a driver change, or broader network instability.
Diagnose intermittent flicker or brief black screens by first determining whether only the image disappears or the whole computer freezes, then checking cables, displays, refresh settings, drivers, docks, heat, power, and GPU behavior.
Diagnose Ethernet that shows no usable wired connection by starting with physical link, then isolating cable, router or switch port, built-in adapter, USB or dock hardware, driver state, and only afterward DHCP or internet configuration.
Diagnose a USB device that is not detected by cross-testing the device, port, cable, hub, and another computer before moving into power, driver, dock, or compatibility troubleshooting.
Diagnose broad Bluetooth failure by confirming the computer has a Bluetooth radio, then checking enablement, driver state, pairing, another known-good device, and hardware support.
Diagnose a printer that is powered on but does not appear correctly to the computer by first identifying whether it uses USB, Wi-Fi, Ethernet, or another computer, then checking device visibility, network placement, drivers, and installation.