Hi Remik95,
first of all power off the machine and try to measure the battery with a multimeter on the CPU.
The battery is under the white hood, you can see the battery if you open the CPU door...
If it is under 3 Volts then you have to change it first with a new 3,6 Volts battery, then you have to initialize... i think this is the first step then we will see if it works... ![]()
Battery: https://www.reichelt.com/pl/pl/bateria-…tct=pol_4&nbc=1
Greetings
Frank