Why won't my operating system install onto the C: Drive?

This could be due to the internal card reader using the "C" drive title (and D, E, F). Since the card reader is pre-installed, it has automatically been allocated the first 4 letters (starting from C). Try these solutions to install your operating system onto the C drive and avoid such issues:

1. Remove the card reader cable before install operating system.
2. Partition the hard drive before install operating system.
3. Plug-in the card reader cable.

OR

1. Disable onboard USB controller before install operation system.