I forgot to comment on this, both articles refer to hardware issues. The first is about HCL, the second stated that bad sectors on a HDD could cause this same problem. If that is the case, you may want to do your best to get the data off of the drive, and LLF, or just replace the drive. (Again, that is only if it turns out to be a bad drive). A simple Laptop HDD to IDE converter can be had for less then $10 and can be used to copy data from the drive to a conventional desktop.