Fixing a computer that was 'struck' by lightning

[Subterranean]

Just been helping my girlfriend with her computer that was in sleep mode when the power has hit by lightning this morning. It seems to have taken out her router, but also the computer.

When pressing the on button, nothing happens, however the LED on the motherboard is lit up. We have tried a working power supply with exactly the same problems so it doesnt seem to be just the power supply. Is it likely going to need a motherboard replacement? and if so, how likely is it that other things have been taken out too, memory etc?

We tested the power supply on its own by shorting the pins on the ATX connector, and it powered up fine.

Is it possible, given that the router went down too, that the surge may have come through the phone line and through the ethernet cable from the router?

Any help is appreciated.

 

[Subterranean]

Thanks to everyone who replied to this to help me. We were away for the weekend but got it fixed today. Thankfully it was just the motherboard, everything else was absolutely fine. The router will be replaced by Be for free. It does seem like the surge came through the ethernet rather than the power in this case.

I've never had or known anyone who has had a computer taken out by lightning so we live and learn. A surge protector has been bought that includes ethernet/phoneline protection