Problem I have pc with this specificatins: Computer Type: ACPI Multiprocessor PC Operating System :Microsoft Windows XP Professional OS Service Pack Service Pack 2 CPU Type Intel Pentium 4 631, 3000 MHz (15 x 200) Motherboard Name Gigabyte GA-945GCM-S2L (2 PCI, 1 PCI-E x1, 1 PCI-E x16, 2 DDR2 DIMM, Audio, Video, Gigabit LAN) Motherboard Chipset Intel Lakeport-G i945GC System Memory 1015 MB (DDR2-533 DDR2 SDRAM) DIMM1: 1 GB DDR2-533 DDR2 SDRAM (4-4-4-12 @ 266 MHz) (3-3-3-9 @ 200 MHz) BIOS Type Award Modular (10/26/07) Video Adapter Intel(R) 82945G Express Chipset Family (128 MB) 3D Accelerator Intel GMA 950 Audio Adapter Realtek ALC662 @ Intel 82801GB ICH7 - High Definition Audio Controller [A-1] IDE Controller Intel(R) 82801GB/GR/GH (ICH7 Family) Serial ATA Storage Controller - 27C0 Floppy Drive Floppy disk drive Disk Drive UFD USB Device (250 MB, USB) Disk Drive WDC WD1600AABS-00PRA0 (149 GB, IDE) Optical Drive HL-DT-ST DVD-RAM GSA-H55N (DVD+R9:10x, DVD-R9:10x, DVD+RW:20x/8x, DVD-RW:20x/6x, DVD-RAM:12x, DVD-ROM:16x, CD:48x/32x/48x DVD+RW/DVD-RW/DVD-RAM) SMART Hard Disks Status OK Peripherals: Printer Canon LBP2900 Printer Send To OneNote 2007 USB1 Controller Intel 82801GB ICH7 - USB Universal Host Controller [A-1] USB1 Controller Intel 82801GB ICH7 - USB Universal Host Controller [A-1] USB1 Controller Intel 82801GB ICH7 - USB Universal Host Controller [A-1] USB1 Controller Intel 82801GB ICH7 - USB Universal Host Controller [A-1] USB2 Controller Intel 82801GB ICH7 - Enhanced USB2 Controller [A-1] USB Device USB Mass Storage Device USB Device USB Printing Support During i work on my pc and require to print somthing ,, printer (canon LBP2900B ) can not pront (appear the cable does not connect or the printer is tunn of),, 1-i turn off the printer and on again but the problem is the same 2- i check the usb cable by replacing with another one ,, the same problem 3- when select printers and faxes from control panel ,, and select the canon LBP2900B and select properties , there is check mark on "use printer offline" but the printer is on 4- i remove the software driver of the printer and re-instal again ,, the same problem I note that in Device Maneger and in the "Universal Serial Bus Controllers " appear one of them "nnknown device" and sometimes there is on it yellow mark please help me if the problem is in the usb in the motherboard or in the wnidows (i use win xp sp2) i mean the motherboard driver not copatiable with windows