This will help if you installed an incorrect or mismatched driver. Try to set a system restore point before installing a device driver. It is highly recommended to always use the most recent driver version available. Paper Handling Media Type: Plain, Thin, Bond, Punched, Pre-printed, Recycled, Envelope, Transparency, Label, Cardstock, Postcard, Letterhead, Thick, Cotton, Colored, Archive Output Capacity and Types: 80-sheet Face Down, 1-sheet Face Up Input Capacity and Types: 250-sheet Cassette, 1-sheet Manual Tray Consumables Model Code: MLT-105S, MLT-105L Standard: Average Cartridge Yield 1,500 standard pages.High yield: Average Cartridge Yield 2,500 standard pages(Ships with 700 pages Starter Toner Cartridge).*Declared cartridge yield in accordance with ISO/IEC 19752 Print Emulation: SPL(Samsung Printer Language) Print Resolution: Up to 1200 x 600 dpi effective output First Print Out Time (Mono) For Print: Less than 9 seconds(From Ready Mode) Print Speed(Mono): Up to 18ppm in A4(19ppm in Letter) Dimension(W x D x H): 360 x 389 x 197mm Noise Level: Less than 49 dBA(Printing), Less than 26 dBA(Standby) OS Compatibility: Windows 2000/XP/Vista/2003 Server/2008 Server,Mac OS X 10.3 - 10.6,Various Linux OS