You can download and install the **HP LaserJet Pro MFP M125 driver** (including full solution or PCLmS driver) compatible with Windows 8, 8.1, 10, and 11 from official or trusted sources. The driver package includes printing, scanning, copying, and faxing features to enable full functionality of the M125 series[1][2][3].

Key points for driver installation:

– The latest driver version is around **11.21.00.2679** for PCLmS and **15.0.15311.1315** for the full solution[1][2].
– HP provides a “full solution” installer (~88MB) that installs all drivers and software needed for multifunction use, including creating a wireless interface if your model supports it[2].
– If you face errors during installation (e.g., stuck at 99%), try a **power drain** on the printer: disconnect power, unplug, hold the power button for 30 seconds, then reconnect power directly (no surge protector)[4].
– Drivers can also be downloaded and installed without direct connection to the printer, useful for remote or terminal server setups[5].

For the most reliable source, download the driver directly from HP’s official website or from verified trusted driver hubs; avoid third-party sites unless they clearly source official HP packages[1][3].

If using Windows 11, ensure your OS is detected correctly on the HP driver page before downloading, and check HP’s support for any Windows 11 specific fixes[2][4].

In summary: Download the full HP LaserJet Pro MFP M125 driver package from HP or trusted sites, install it following power reset if needed, and verify OS compatibility for best results.