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No mouse, keyboard on fresh install
Trying to install Win 7 Home Premium 32 bit on a 60Gb partition of SSD (the other partition has Win 8.1 installed and working). Windows loads the files off the disk, logon screen with mouse pointer comes on, but no keyboard or mouse function. Both are USB devices connected through the PS2 ports. Tried a mouse on the front panel, same result. All works fine when I boot to Win 8.1 using the same hardware.
Previously I had Win 7 64 bit installed on the same partition, I wanted to use the 32-bit version, so I reformatted the partition. The first attempt installed OK, but on rebooting I lost the mouse and keyboard. The second attempt lost the mouse at the install login screen.
I suppose it is something in the BIOS, but how do I fix it without messing up the Win 8.1 install??
Thanks