More tech problems

My computer froze as I was importing the final bit of footage, the epic battle between corks and ducks...now the files are corrupted and I can't import them. So, now I'll have to reshoot. Kodie found the place where Premiere keep the cache' files, there was a couple of GB in there, seriously slowing the whole process down. Now I clean it out before I close the program each time to keep it running better. I really need to get an external hard drive but I'm not sure if I can justify it considering I probably won't be continuing with video making next year. I reckon I shall just press on with it how it is, and finish the year out.