Apple mouse and keyboard do not work during installation windows 8.1
iMac (27-inch, Late 2012), 2.9 GHz intel Core i5, 8GB 1600 MHz DDR3 RAM, NVIDIA GeForce GTX 660M 512 MB.
OS X Yosemite 10.10.3 (14D136) Boot Camp 5.1.4
I have managed to create an ISO file of Windows 8.1 (64 bit) DVD. I have used boot camp to partition and install windows to a point.
I used a 16GB USB 3.0 flash drive for downloading the support files etc. to.
My apple keyboard and mouse were recognised for telling windows the language to install etc. but as soon as I've got to the personalising screen on first start up (I guess) my apple keyboard and mouse do not work. The first time the USB flash drive was left plugged in. I tried to use a logitech wireless keyboard and mouse with the transmitter plugged into a USB port, but nothing. I restarted the mac without the USB flash drive plugged in again the keyboard and mouse didn't work.
I have found the USB wireless transmitter for the windows keyboard must work because it was still plugged in when I booted back into OS X and I was asked to press a key on the keyboard as it was not recognised.
The iMac is now booting into OS X but the windows partition still exists but I can't set it up at present.
Please help......
Thanks, Tim
iMac (27-inch, Late 2012), OS X Yosemite (10.10)