What are the fault codes for the Gigabyte T1005M?

I have a Gigabyte T1005M that is about 3 years old. I has suddenly died without a warning or faults. The battery is charged and the power supply works. When attempting to power up there is no sound but the power, caps lock and num lock leds light up. They stay lit with no further action ever. It can be turned off with the power switch/slide.

It is not the screen. I have tried the display switch and an external display.

I have upgraded the HDD to a SSD about 12 months ago after the previous drive died. It has been a good unit until now.