Almost too late for CS major, but want to do CS masters...what to do?

[intervenient]

I'm currently studying statistics, after a particularly bad quarter turned me away from my computer science degree. Lately however, I'm starting to regret that decision, as I'm finding myself more and more disliking statistics.

I could switch back to the CS major at my school, but I would need to take a lot of courses to get me back on a decent schedule, and I fear burn out again.

I've been told by a few people to stick out the stats major, and take up some CS classes on the side, but I'm not sure how prospective grad schools would look at that. I'm really interested in software design and HCI.