Thank you. What do I need to check and how can I do it?...

With that the power button blinks 3 times when I plug it in but otherwise the behavior is the same....

What would you be able to do with it?...

Hello,

my x270 suddenly got bricked for no apparent reason. When I press the power button the keyboard and the button light up for a few seconds and then turn off again. I've tried the usual fixes like draining the CMOS battery and so on. I've now used a CH341a to back up the bios and flash all other ones I could find, to no avail. The furthest I got with some is that it would beep at the end in addition to what it did before. Can anyone help me?

I don't know how helpful this will be but this is what I was able to find out about it:
TYPE 20K5-S0B700 S/N: PC - 0SURKD...