My friend recently screwed up her computer recently and I took it upon myself to fix it, thinking that running chkdsk or Startup Repair would fix the problem. I ran Startup Repair first, and I still couldn't run Windows, so I ran Chkdsk. Chkdsk found, repaired and deleted a huge number of corrupt, orphaned, and otherwise unusable files. After doing all this and getting permission from my friend, I have decided to go ahead and reinstall Windows. For some reason, I could not format the parition that Windows was originally installed on, so I deleted it and made a new partition on the hard drive. I still can't install Windows and it's driving me crazy. I got error code 0x80070057 when trying to format the first partition and while trying to install Windows. What does this error code mean, and what can I do to reinstall Windows?