If there's no harddisk present, it means you need a password at hardware (BIOS) level, immediately at boot-up. The former owner should have provided this pwd to you. However, there's a work-around. 1) Disconnect powercable 2) Open casing 3) Locate the CMOS-battery (it's a 3V CR2032 battery) 4) Remove this battery from it's socket / holder 5) Get a 100 Ohm resistor 6) Connect both pins of resistor to the connectors of the batterysocket / holder. Hold this resistor for about 2 hours. 7) Insert battery back again 8) Close casing, connect powercable and turn on PC.
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If there's no harddisk present, it means you need a password at hardware (BIOS) level, immediately at boot-up.
The former owner should have provided this pwd to you. However, there's a work-around.
1) Disconnect powercable
2) Open casing
3) Locate the CMOS-battery (it's a 3V CR2032 battery)
4) Remove this battery from it's socket / holder
5) Get a 100 Ohm resistor
6) Connect both pins of resistor to the connectors of the batterysocket / holder. Hold this resistor for about 2 hours.
7) Insert battery back again
8) Close casing, connect powercable and turn on PC.