Help! Buds falling off Cym.

[bean521]

Hi everyone,
I'm brand new to orchids. My boyfriend got me a beautiful cymbidium for valentine's day and I'm already killing it. I've been reading a bunch online and have a few questions:

1) Is it too close to the window? There are some dark spots on the leaves which I understand might be sunburn.
2) Do I have crown rot and what do I do?
3) When I woke up this morning the buds on one of the stems had all turned brown and were falling off. There are two at the top left. What can I do to save them and do I need to clip where the buds used to be?

Thanks so much for your help!