Fujitsu amilo mini ui 3520 does not start?

Hello, my laptop won't start anymore. It loads the cityscape but does not load. The mainboard battery has been replaced, what else can I do?

What kind of operating system is on it?

I don't know anymore, the laptop hasn't turned on for years.

Windows 7?

Do you still get to the bios?

How do you get in there?

Usually press the Delete key as soon as it has been turned on. Better to press several times.

No, he doesn't go there like that

Maybe try in safe mode = switch on the laptop and wait until the picture is there. Then keep the power button pressed until it goes out. Do that three times and let it start the fourth time and see if something happens.

Does not work