"The Power Management Unit (PMU) is an integrated circuit (computer chip) 
typically found on a computer's logic board. As its name implies, the PMU is 
responsible for managing all aspects of the computer's power. It controls 
hard disk spin down, sleep and wake, some charging aspects, and how any 
devices attached to the computer affect sleep.

"If the settings in the PMU become corrupted, it can result in operational 
anomalies such as your computer not turning on, not displaying video, or not 
waking from sleep, among other things. In these situations, you may need to 
reset your computer's PMU.

"Resetting the PMU will not resolve issues in which the computer stalls or 
is unresponsive. A PMU reset should only be used as a last resort in the 
case of a hardware failure or when the power management system is suspected. 
Resetting the PMU returns the computer hardware, including NVRAM, to default 
settings and forces the computer to shut down."

-- 
MB W202 C220 d



"Valdas" <valdas@be-spamo-takas.lt> wrote in message 
news:ghlee1$82b$1@trimpas.omnitel.net...
> Sveiki. Vaiksciodamas po motinines (Gigabyte, AMD, Socket 939) BIOS'a 
> (AWARD) skyrelyje "Advanced chipset features" radau toki punkta "PMU", 
> kuris gali buti arba "Disabled", arba "Auto". Gal kas zino, ka sis punktas 
> reiskia? Googleje kazko aiskaus tuo klausimu neradau.
>
>