Hello everyone, I was able to flash the bios into my mainboard and the computer booted up.
I loaded [URL="https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-desktop-motherboards-graphics-cards-and-pc-peripherals/bios-schematic-requests/103082-m720q-desktop-thinkcentre#post3208468"]this[/URL] .bin file and the computer came to life.
Then the computer started giving errors about its serial number and its type, but it was working now.
I then loaded my numbers into the bios and updated it to the latest version from Lenovo's...

Hello,
I have a problem with ThinkCentre M720q MT-M 10T7 SN: S4LW5088.
Mainboard is NM-B551 rev.3.0.
When the computer is turned on, it emits 3 long beeps and 1 short beep, the two LEDs on the front panel light up and the CPU fan turns on.This board is only with one bios chip, without EC chip.
I am attaching the bios read from the board right now.
Thanks in advance.
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