On 9/23/2011 9:00 AM, Long Wind wrote:
even pressing power button on PC case can't shutdown lenny I have to unplug power cable to shutdown
ACPI BIOS normally forces you to hold the power button in for at least 3-5 seconds to power off a system when the CPU is running in protected mode. Are you doing so? If yes, and it won't power down then I'd say you may have a problem with the motherboard.
I suspect the hard disk is failing
A failing hard disk won't cause these symptoms. -- Stan