I had an old hard drive D: now 25.8 gb free space installed on a computer I had purchased Hewlet Packard C: now 171 mb free. Which it appears the C Drive became smaller and smaller after the D was installed. Now I am having problems as there is not enough space on the C: Drive and so what do I do? At this rate, I'm bound to run out of space completely. I'm not a tech person by any standards to know what's going on here.