I have an old Brother HL-2270DW printer that works fine with both Windows 10 and 11, except for the appearance of a faint vertical streak that appears on the printed pages. I've tolerated the streak problem for several years, but I recently purchased an HP all-in-one printer.  The problem is unrelated to the toner cartridge and drum unit, but is likely a problem with the fuser pressure roller.  Were I more proficient, I would have simply replaced this roller.