Hi Guys, I've got a little annoying problem that I'm hoping some one can give suggestions as to what the underlying problem is or possible solutions (or both, the or is not exclusive). Systems specs follow. There is currently no overclock. Specs: MB: Gigabyte X58A-UD3R CPU: i7 930 RAM: 12GB DDR3 CMZ12GX3M3A1600C9 Graphics cards: nVidia EVGA GTX570 Classified + nVidia 9800GT+ Sound cards: Integrated + Creative USB X-Fi Go! Pro Storage: 1TB Seagate some thing + 4 x 80GB Seagate some thing cheap in RAID 0. OS Windows 7 64bit. Any way, the problem is this: After some amount of the system been busy (playing a game for example) doing things with the mouse (Logitech G500) causes the system to hang. So moving the course continuously will cause this as well as putting the mouse wheel into frictionless mode and giving it a good spin. This has been happening for a while but I have yet to determine the cause or combination of things that cause this. This started happening some time between getting the mouse, upgrading the graphics card, upgrading the RAM and getting the USB sound card. All of these things happened in a very short space of time. I have tried different graphics cards and it still happens so I am reasonably confident it has little to nothing to do with the graphics card. Switching to the old RAM isn't really an option as they have now been used else where. Unplugging USB devices (or any thing else) does not make the problem go away while the system is running. Rebooting fixes this however. For fun I've also tried increasing the voltage on the CPU and RAM slightly on the off chance that they are some how not getting enough power. This occurred a few minute ago while playing Orcs Must Die! 2. It happened after 6 hours of play. The thing that changed after 6 hours is that I jumped on TeamSpeak, so I'm currently very suspicious of the sound card (and it's drivers). To demonstrate the effect on the system here is a screen shot of performance monitor. Notice the gaps in the graph, that's when I was moving the cursor continuously. Strangely enough the actual cursor on screen is unaffected by this and continues to move (it's a hardware cursor so doesn’t need the operating system fully working to move about?). Originally I thought this was some thing to do with the RAM as I discovered that the RAM timings had been reset by some thing. After changing them back it seemed to stop happening. Since then it's started happening again (did some thing change? I don't know, forever tinkering with things, so probably). What I will be trying is the following all at once to make the problem go away. If the problem goes away try reverting once change at a time over a period of days. Then if the problems occurs again after one change undo that again and see if the problem then disappears. The following changes are going to be made: Stop using the USB sound card. Clearing the BIOS CMOS and setting the minimum settings to have the RAM running at the right speed and get the RAID working. Suggestions? Ideas? Best wishes? Condolences? All are welcome.