While changing something in the BIOS the laptop crashed and now it won't boot at all. (no video output, no indicator code, no keyboard backlight)

When I press the power button the LED comes on and the fans start at full blast for about 30 seconds and then it turns off.

Taking the RAM out and powering up gives the RAM not found indicator LED code, but no other indicator codes seem to work (CMOS battery, LCD disconnected etc.)

Anything I can try without going to a repair center?