Not as simple as this sounds - normally you can just select which drive to install software to. However, some programs are trying to auto install (and not giving an option to change) to E:/ which doesn't exist, unless I turn on my ext hard drive, which doesnt have an op system on it. I need these programs to default to installing on C:/ and I can't work out how to do it. Help!
I solved the problem. I turned on the ext drive, tried reinstalling nero, so there was a drive E:/. managed to get into the custom installation options, and select drive C for it to install to. so its pretty much fixed.