Ive had some problems with a new(old) replaced motherboard. In the start the CPU showed 0 and 127 celcius but after a while with different work to narrow the problem it suddenly settled back to normal 28. Actually after moving the DVD to secondary controller hmm. (last step in a desperate chain of experiments hehe). I got w2k3 installing on the DFI NFII Ultra Infinity(SocketA) and on a SATA disk on the Sil3114 SATA kontroller with textmode F6 driver installation. Everything seemed fine. But i have a big problem getting it to detect USB mouse. Ive tried many and they all work on another W2k3(S478) machine. The only relative difference i can see is that the s478 machine has the HID(human interface device) installed in system-hardware and the HID service started. On the socketA machine i cant start the HID service and i think it is because the HID isnt present in the system-hardware list. How can i trick/install the HID into the system-hardware? I cant find it in "add hardware". And is this the problem? Seems logical. The Bios is set for USB 1.1+2.0 and USB Keyboard enabled. Ive also tried only USB1.1 set in Bios. I installed the SP1 and hotfixes hoping it would fix the problem but it didnt. Ive also tried installing the driverpack for the Razer Diamondback and tried a Logitech Mx310 mouse. When i reattach the mouse, the laser/optics blinks 3 times and "unknown device" appears in the system tray on a USB icon. A quick list of my inventory: - DFI NFII Ultra Infinity with last bios 24. nov 2004 (socketA) - XP-M2400, supported by the mobo. - Windows 2003 with SP1 and service packs. - Nforce remix 2.5.1 basically 5.10/5.11. Had problems befor installing it aswell. - Directx 9.0c with SP1 - Forceware 77.30 on a 6600GT. - Benq DW1640 on the secondary controller - 250GB SATA barracuda on the SI3114 controller. etc.