Question Lenovo Yoga Slim 7 doesnt start - cant find flashing error code

[chickensausage313]

Hey folks,

after I used my laptop until the battery went off I tried to start it the next day but couldnt use it again. It tries to start (light of keyboard starts and ventilators turn on really short but then it turns off again). Two times I was able to see the lenovo sign at the start but apart from that the screen was always black. I already tried all your recommendations:
■ Start with a Hard Reboot
■ Change your Power Source
■ Re-seat the RAM
■ Test another AC Adapter

But nothing worked. The Laptop shows me a blinking code but I cant find nowhere the Error translation at the Lenove website.
Here are the codes with battery connected and also without the battery.

Actual: Charging light (orange): Long light - small flash - off 🔁 Power light (white) 3 flashes - off - single flash - off 🔁

Remove battery connection: Charging light (orange): Long light - flashing - long light🔁 Power light (white): 3x flashing - off - 3x flashing 🔁

Can anyone help me solve this problem I really dont know any answer.
Thank you in advance for the support and time, I really appreciate it.