Hello. I have a laptop x1503za-l1147w (S/N: N7N0CV111902281). It had an i5 12500h processor installed. But since it broke, I ordered another processor and it was replaced with a pentium 8505. The original BIOS is lost. I tried to flash it from 1503za - no response to the button. I flashed it from 1504za - there is a response to the button, but no image. I cleaned the Me region. There is a native box with a serial number and other data. Can anybody help with editing bios?