Hey all I just got some new hardware and have installed an ASUS 7850 graphics card along with a Gigabyte Z68 UD3H-B3 rev. 1.3, and an Intel i7 2600K. The first time I installed Windows 7 x64 on this new hardware, I played World of Warcraft once, though I'm not sure if this was with or without the AMD driver installed. Once in the game, the mouse started turning itself on/off every 15 seconds, being off for about 2 seconds at a time. Searching for this problem, I saw comments about the AMD AHCI usb driver interfering, which is what later led me to the Intel Update utility mentioned below. I didn't know what to do, so I decided to reformat the drive. However the problem kept reappearing every time i reinstalled windows. Basically, whenever I install an AMD driver (I have tried with 12.3 and 12.4 (these are the only ones supporting the 7800 series) ), the USB system fails after the next restart. The process goes like this: I install the AMD driver I restart the computer The computer freezes at the "Starting Windows" windows-logo I restart the computer It boots up, and ~5-10 minutes later, my USB mouse stops working. A minute or two later, my illuminated keyboard begins flashing, as if its power-supply is repeatedly turned on/off. The keyboard is no longer responding, but still lighting up. Having neither keyboard nor mouse, Im forced to do a hard reset, only to be met by the same problem again. Now, I've reformatted my computer several times over the weekend. I've lost count of how many, and I've finally narrowed the problem down to the driver. I solved it to some degree at one point, by installing the 12.3 driver, and then immediately using the Intel Chipset Device Software (INF Update Utility) : http://downloadcenter.intel.com/Det...g&OSVersion=Windows 7 *&DownloadType=Drivers It worked for some time, and I managed to play a round of Battlefield 3 with no problems. Once i exited the game, I began to get freezes and messages about the display driver not responding and having been restarted. When I tried to navigate to the intel website to download the tool again, the mouse stopped responding, quickly followed by the keyboard. Interestingly, the last time I replicated the problem by installing the 12.4 driver, then immediately using the Intel Update tool, my keyboard and regular mouse stopped working, but an older Logitech Click! optical mouse continued to work. I didn't think to keep the computer going to see if it was going to be affected, but it at least didn't fail as fast as the others, if it was going to at all. Keyboard and mouse are Razer Lycosa keyboard and Razer Imperator mouse. I don't know if it's relevant, but I've always had to click once when booted into windows before the mouse would begin responding, also on my old hardware. I am at my wits' end, and honestly have no idea how to solve this problem. I hope one of you can help, since I really have no idea what to do next. Have posted this to the AMD Game forum as well Thanks.