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Zdravim, dostal se mi do ruky zaheslovany notas 6720s, podle servisniho manualu staci vytahnout baterku na 5min, ale mel jsem ji venku celou noc a porad to otravuje. Jakou chybu jsem udelal? Co tak rozebrat notas, vytahnout baterku, slozit zapnout bez baterky??

Uz jsem hledal na foru:
- power-on password ,POP
bez neho nelze zapnout system. Heslo lze snadno
vymazat z CMOS RAM.

a nema to byt baterka na desce?
(takova mala knoflikova)

tady je muj postup prace:

RTC battery
NOTE: Removing the RTC battery and leaving it uninstalled for 5 or more minutes causes all passwords
and CMOS settings to be cleared.
Description Spare part number
RTC battery 449137-001
Before removing the RTC battery, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and
then unplugging the AC adapter from the computer.
4. Remove the battery (see Battery on page 39).
5. Remove the following components:
a. Hard drive (see Hard drive on page 40)
b. Optical drive (see Optical drive on page 46)
c. Keyboard (see Keyboard on page 50)
d. Switch cover (see Switch cover on page 47)
e. Speaker (see Speaker on page 53)
f. Display lid switch module (see Display lid switch module on page 54)
g. Display assembly (see Display assembly on page 55)
h. Top cover (see Top cover on page 59)
i. System board (see System board on page 65)
Remove the RTC battery:
1. Turn the system board upside down, with the audio connectors toward you.
Component replacement procedures 77
2. Remove the RTC battery from the socket on the system board.

Jak jsem psal, notas rozebran, baterka z desky vytahla na celou noc, notas opet slozen a opet po zapnuti otravuje power-on password. V manualu nic k tomu uz neni uvedeno.