corrupted bios

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@Chino de Oro​ I think that i cant do anything to repair this.
After replacing the battery to try to start the recovery image it is showing the same error :C (2 amber 3 white) but if i just turn i ton without ctrl+esc its booting itself 3 times and then the same error appear.

Must have at least one DIMM of original RAM installed for system to operate.

the problem is that it is plugged in...

Assuming you are using the OEM memory module which was shipped with the machine.  You don't boot the machine.  With the BIOS recovery USB plugs in, Just hold both Ctrl + Esc keys and connect the power adapter.  When you see the keyboard light lights up, release the keys and BIOS recovery interface screen should display.  

There's a good chance you can restore the BIOS settings without physically replacing it. Here are a couple of methods to try:

Method 1: Clear CMOS

This is the most common method to reset BIOS settings to default. It involves clearing the CMOS memory, which stores BIOS configurations. Here's how to do it:

1. Power Down Completely: Turn off your laptop and unplug it from the power source. Remove the battery as well.
2. Locate Clear CMOS Jumper: Consult your laptop's service manual or search online for your specific model and "Clear CMOS." This will help you locate the Clear CMOS jumper on the motherboard. It's usually a small jumper with two pins connected by a plastic cap.
3. Reset the Jumper: Move the jumper cap to the opposite pins for about 10-15 seconds. This shorts the circuit and clears the CMOS memory.
4. Put Everything Back: Replace the jumper cap to its original position, reinsert the battery, and connect the power cable.
5. Power On: Try turning on your laptop. The BIOS should now be reset to defaults.

Method 2: BIOS Reset Button (if available)

Some laptops have a dedicated BIOS reset button on the chassis. If your laptop has one, you can press and hold it for a specific time (refer to your manual) to reset the BIOS.

Important Considerations:

• Consult the Manual: Refer to your laptop's service manual for specific instructions on clearing CMOS or using the reset button.
• Safety First: When dealing with the motherboard, be mindful of static electricity. Ground yourself before touching any components.
• No Success? If these methods don't work, it's recommended to contact your laptop manufacturer's support for further assistance. They might have additional troubleshooting steps or suggest a BIOS update if available.