I have trouble to install Linux OS properly on this mechine. More website outside there are comments that machine is pro to Windows. The word is ¨HP doesn´t like Linux¨. That machine not support old Linux kernel and itś seem need a new Linux OS and also new kernel. Some say, you can use old Linux version but you will go through a hard journey to compile the kernel. By the way, after investigate what happen on that, finally i found the solution. I have try to install suse 10.1 with noacpi=off command and i had experience on network card not detect. I try on Ubuntu 6.10 32bit edition with command noapic nolapic pci=off acpi=off and very sadly it cannot boot at all. I just go to install RHEL 5, CentOS 5 Beta and Ubuntu 7.04 Beta with same command at three same machine. At this stage, i happy because the installation success and the Linux run properly on this machine with all driver detected. For conclusions, who those want to buy a machine(pc and server) make sure it is compitable with the current Linux version. Don’t blame me, why use this HP machine because it is made by my management. I hope in the future maybe all Linux distro will support on this HP machine.