Hello Andre. After a long search for years, and when i thought all is lost, i have found your thread. My computer: Mobo: Asus P5K SE CPU: Dual Core e2180 RAM: 2*2GB Kingmax Video: Club 3D Radeon 4850 PCI: Audigy SE Since 2009, i keep having hardware interrupts between 10-20% cpu usage. I really can't remember from what has started, and over the years i changed only the video card, but the interrupts remain. The big problem is that i cannot find out what is causing these interrupts, because after the first restart, the interrupts dissapear. I actually have 3 ways to get rid of them: 1. Press CTRL-ALT-DEL at POST screen (it resets, and in windows all is ok, no interrupts) 2. Enter BIOS, and EXIT 3. Restart the computer after the first boot. After this, they never appear again, untill i shutdown the computer, and let it rest about ~1-2hours. If i open the PC then, the hardware appears. If the computer is opened in the first 10-20mins after shutdown, i have no interrupts. Same if i put my computer to sleep. I used your tutorial to find out my problem, but it checks out as UNKNOWN I will upload the .etl and maybe you can find out my problem. Many thanks, and i'm sorry about my english mistakes. http://www.megaupload.com/?d=NXPNOF33