I have an IBM machine running Windows XP Pro sp3. Recently, a message appeared that a certain fle, KB2559049-IE8 (a Microsoft update from 2011) had become corrupt and/or unreadable. Apparently, I did not address this problem quickly enough, mostly because of my ignorance about this problem. A few days ago, while the machine was idle, the dreaded blue screen appeared, the machine shut down, and attempted to restart. When it got to the Windows loading screen, after about 4 runs of the progress bar (usually runs about 20 passes before finishing), the same blue screen re-appeared, and it went