Hi, i got this lenovo on service, power buton is blinking for some time, but then stops after a minute or so. Allo, when battery is plugged onto mb, laptop charges for a minute at about 25W, then stops for a few seconds, and the cycle repeats. Laptop was already tried to fix by someone unknown, I can see bios chip has been messed with, i can see it has been soldered.
I have 3V3 and 5V onboard, something is happening, but I have no clue.
Any advice will be appreciated
Should i try flasing bios, is there dump for it?
I have 3V3 and 5V onboard, something is happening, but I have no clue.
Any advice will be appreciated

Should i try flasing bios, is there dump for it?