There’s a feature to allow charging from USB ports while a computer is off, Lenovo calls it “Always on USB.” That feature is constantly using power even when nothing is plugged in. To test if any ports have that feature power off the computer then try plugging in a simple 5v 500ma usb device to charge. If it starts charging then it has that feature and will drain power. If no options to disable in BIOS then as far as I know stuck :(

I’ve worked on a couple recent gen refurb laptops (dell and lenovo) with that feature but lacking any disable option in BIOS. I’ve tried to get into the habit of plugging in whenever not being used but still end up with things empty more often than I like. Very frustrating and I think only hope is future bios update to give that option.

What are max print speed and volumetric set to?

For some filaments (silk PLA) I’ve had to slow things down (120mm/s max print speed and 10mm3/s max volumetric speed) or it comes out horrible. Only used 0.4 nozzles so far though.

On ‘Startup’ section, what options are available for ‘Boot Mode’ ? May want to try using something other than Quick during OS install. Should be able to change it back afterwards for faster boots.

Slicers for FDM are open source and lots of forks. The built-in printer profiles vary a lot but can be created from scratch. You can find lots online to use as examples too. I currently use Cura, Prusaslicer, and Orcaslicer.

I’m more interested in printing plastic than tuning/upgrading the printer itself so I recommend a printer with automatic z-offset and bed leveling. Basic maintenance tasks such as cleaning, oiling, and greasing will need to be done on occasion no matter the printer. Beyond that I’ve only done simple retraction tuning.

I started with Elegoo Neptune 3 Pro. Klipper firmware upgrade improved speeds a lot. It wasn’t bad for a budget printer but lack of automatic z-offset can be frustrating so I replaced & gave it away to friend. Replaced it with Creality K1 which was a lot easier to get started with thanks to automatic z-offset calibration. Output quality is good but to get better would require upgrades + tuning. Been saving up to replace with Bambu Lab P1S combo so I can also do multi-color printing.