Hi, I've installed nc4400 modded bios without whitelist (modded bios from this forum, by TTAV134's post #290, "This is no request thread! HP COMPAQ bioses, how to modify the bios?" thread, can't insert link ). I installed an Intel 5100, and i must install the network card computer powered on. When the computer start, i pass the bios, and i stop the grub's timewait. I install the network card, and i continue booting. The network card work properly when the os is booted. When i stop the computer ("halt" on Linux), the computer doesn't stop really, the power led is still green, and he consumes power. On battery, he consumes more like sleeping mode. I can restart the computer without problem, but whern stopping, the problem happens every times. If i install the network card when the computer is off, power supply disconected, batteries removed, when i plug any power sources, the computer start automatically, fan at full speed, black screen blocked and the power led blink green/yellow. It's really weird and annoying. I need WiFi n, because the wall of my house is thick (50" of 100% real stone, very old house). WiFi G doesn't work in every place, or with poor rates. May i must reinstall Ubuntu? I don't think, but it's a weird problem... Thank you for your help.