Good day to all!
BIOS problem. The SR40B chipset was replaced on the laptop after a man tried to dust the laptop on his own, but failed. Diagnostics showed that the PWM microcircuit of the power supply on duty was out of order. After the replacement, the laptop started to start up, but there was no image either on the built-in matrix or on the external outputs. Further diagnostics revealed a low resistance on the 1.8V circuit. The culprit was the SR40B chipset. A new one was bought, soldered. There is no start. Regil that a non-working microcircuit was caught. Two more chips were bought. The behavior of the laptop has not changed. When you press the button, it consumes 0.02 A, and the oscilloscope shows a short readout of the flash. Installed back the old chipset chip. The laptop started to start, but as before, without an image. I decided to try to clear the ME-region according to the manual from this forum. After any changes to the dump, the board stops starting and behaves the same as with a new chip. That is, it consumes 0.02 A from the laboratory power supply, and there is no main power supply except for 3.3, 5, 1.8V. I noticed that the BootGuarg mode is in profile 0. Although there is an OEM Public Key Hash and there is an OEM Key Manifest Binary. Also in the Boot Guard configuration, the Key Manifest ID is not zero, but 0x1. After any attempt to build with a clean ME-region, I get a "corpse". Moreover, it does not start on the old chipset on which the original dump was running. And it behaves in the same way as with a new chip.
Screenshots are attached. Dump too. Guys, a huge request to look at this dump. In attachments, dump. Is it possible for this behavior to be due to this hash, and can we do something about it !?
I apologize in advance for my language, I use a google translator.
razer_old.BIN.zip (6.2 MB)