It is ok. Thanks. I don t have the original charger and the battery. If i want to start the laptop only with my power supply, the laptop not started. I must disconnect the bios battery, reset the bios and then the laptop starts. I have o battery from another lenovo laptop but it have 11.5v and my laptop need 16v. But if i put this battery, the laptop start when I press the power button and don’t need to reset the bios. I tried putting a 1.8k resistor between the ID pin and ground, but the laptop still won't turn on and doesn't recognize the charger....

I kept searching for the bios and finally the laptop started up and displayed a few errors....

The problem is like this. I had problems with the EC, it was burned. I asked on the forum for a new EC bin and offered the original bios of the laptop. After I wrote the bin, the laptop started and displayed a message related to the charger, but the problem was that the laptop would not start unless I reset the bios. I saved the existing bios and put another one, and the laptop did not display an image. I put the last saved bios back but I still have no image....

Can someone help me with a bios for this laptop model?
Legion 5-15ARH05 (Lenovo) - Type 82B5
Serial number PF23KJ8M
Thanks....

The bin is good. Thanks. Now i have another problem. The laptop start only if i reset the bios. If I press the power button, the laptop does not turn on. I have to disconnect the bios battery and then reconnect it, after which the laptop turns on by itself. I think i need another bios....

You are right. Considering that I have already found 3 defective integrated circuits, all powered by the 5V rail, and even 2 faulty Drmos, I really need a boardview to see what other components are powering this 5V rail. I can't find a schematic or a boardview anywhere. I have another question related to these drmos. I have QD9619A on my board and I would like to replace them with SIC651CD but I don't know if they are a good replacement. Thanks.

Hello friends I'm working on this MSI MS-16R81 V2.0 motherboard and I noticed that there is the U31 chip which shorts the +5 line. I removed it but I couldn't find its datasheet or the schematics of the card to replace the chip. Can anyone help me with the motherboard schematics , boardview or the chip datasheet? Thanks in advance....