Hi there, I think I ruined my computer, and I'm not sure what to do. I really need to know whether there is anything I can do to fix this, or if I should start saving my money for a new Mac. I know virtually nothing about computers, so I will hopefully explain this correctly. Thanks in advance for advice I have a MacBook Black 3,1 v10.5.8. I bought it around Christmas 07/08. I have always LOVED this computer, the only problem I ever had early on is that it had a phantom disk that would never eject (who cares) and then a couple years ago my .Mac mail and address book started totally malfunctioning and became unusable, would just quit immediately. FireFox quits on me a lot too, but not enough for me to care. But anyway, my mail/address book thing was annoying, then Photoshop wouldn't run correctly, and my internet became slow. Applications would shut off and freeze etc. SO last straw was my computer said I had no disk space for iTunes DLs or photo uploads. So I figured the memory was out, and I looked up how to make your computer run faster. I went CRAZY deleting files and applications such as GarageBand and the like. I backed up all my personal docs on a jump drive and then deleted everything else I could determine was safe to delete. I think I was wrong, and deleted some serious stuff. Now I cannot open Photoshop, mail, address book, Microsoft Word, to name the big ones. My computer is sometimes a bit slow, and FireFox quits alot. iPhoto still doesn't work. And NOW, I cannot play any iTunes movies that I purchased and it deleted my authorizations to play all my music. My Photoshop won't run at all, neither will most other apps. I basically use this thing for the internet only at this point. I will have to buy another computer if I can't fix this as I need these apps for my job. Plus I'm worried the whole thing will just crash one day. What if I reload the whole operating system? All my files are gone anyway and nothing works, I just don't want to buy a new computer. What do you think? Has this happened to anyone? Would that be like starting with a clean slate?