Question My laptop won’t boot, only a black screen ?

[tfsgho]

Hello everyone, thanks for any helps!

Laptop model: Lenovo V14 G2 ALC
CPU: AMD Ryzen 5 5500U
GPU: AMD Radeon Graphics
RAM: 8GB soldered
More info here: https://psref.lenovo.com/syspool/Sys/PDF/Lenovo/Lenovo_V14_G2_ALC/Lenovo_V14_G2_ALC_Spec.PDF

My problem is after trying to connect a ssd with a working Linux system on my other laptop it give me some message. The message I have not able to read all because is flash to fast. But I think he says something about xen hypervisor and after that it won’t turn on at all. About the display nothing appears No Bios, No the brend logo, nothing. but there is light on display when power button click and the Esc & Caps have light too but don’t respond they stay light up. Besides that everything work when power button click - fan, ram, SSD etc.

Some troubleshooting I have tried:

• Tried to boot with windows noting comes up.
• Remove CMOS Battery.
• Power without battery.
• Adding external RAM because this laptop has soldered one.
• connecting with external display with HDMI.

What I have not tried is updating the bios via USB, because I don't know how to do it for this laptop.
if someone can guide me I will be grateful.

 

[helpstar]

disconnect ssd, can you enter the Bios then?
try an external monitor