Q: Stuck in windows bootcamp

Hiya,

I tried to log into bootcamp for the first time after installing El Captain and my wireless keyboard will not work. This seems to be a common problem but when I restart the mac I can't get back into OX10. I have tried holding the alt key and it doesn't give me the partition choose option and I have also tried alt/cmd/p/r at startup as recommended in another post here. Any ideas?

Thanks,