DohaDell,   That means that your hard drive is slowly failing. Please backup all files and folders that you cannot afford to lose.   You'll need to replace the hard drive. If under warranty, contact Dell Te ch Support.     Rick
Like so many users before, I am dogged by this error. I have a Dell XPS M1530 loaded with VIndows Home Premium 32-bit. My last successful Windows Update was on 6/13/12. Since then I have tried three solutions, all have failed. I have tried: Checksur.exe Microsoft Fixit Reinstalling Windows via DVD What do you think I should do? There is a download on Wikierrors, and the like. My wife suggests replacing the hard drive and build everything up again. I am happy to do what is necessary, but I am a layman and need guidance.  Thank you.
Windows Update Error 80070490