List, I installed an FC4 desktop system on a 500 mh hp pavillion without much difficulty. After the updates were done and I started tweaking some user stuff I started having failures with some error reporting on the terminal screen as the system craters. If any of you can help me decide to use this PC as a small boat anchor or to replace the CPU etc I would appreciate your help. The errors are as follows: CPU 0: Machine Check Exception 0000000000000004 Bank 4: b200000000040151 [<c011a858>] panic+0x45/0x1b4 [<c011b1ea>] printk+0x1b/ox1f [<c010b223>] intel_p6_mccheck_init+0x0/0xc5 [<c010b06c>] intel_machine_check+0x0/0x1b7 [<c01030cb>] error_code+0x4f/0x54 Thanks! Greg Ennis