Yaris won't start :/

[waxaddict]

Hi guys, hoping someone can help me with this as I'm clueless with cars.

I recently let my dad use my 2002 Yaris, manual, for a month while I was away. Whether its coincidence or he did something I don't know, but in the 3 weeks since it would turn over for a good few seconds before starting up.

Never had any problems before, and he said its just the weather, but it would happen mostly once the car had run for a bit. Start immediately, pop to the shop, then when starting again it would take a few seconds.

Today I started it and it jumped straight on but then instantly just cut out.

I turned the key again and it just kinda spins and just gives a long whirring sound. Nothing is kinda kicking in or trying to, its just a whirrrrrr.

Sods law, I'm supposed to be selling her later this week and now I get my first big problem.

Any ideas? Things I can check before I take her to a shop and get fleeced?

Cheers.