I am a forum newbie and yes, I still travel and use my old Aspire One laptop with 2G of ram running Vista. . .\n \nI have had this problem a few times. . .\n* The unit will not fully shut down\n* It will not fully or completely boot\n* It will randomly stops, etc. etc. .\n \nDuring these events, if I listen closely, I can hear the hard drive cycling, much like the sound a failed HD makes. And, my concern what has happened; the HD has crashed.\nHowever, I found a fix and learned that the HD did not fail. It was a connection problem.\n \nThe fix. . .\n* remove the power cable and the battery\n* Turn over and release the 2 tiny screws on the largest plate cover on the back\n* remove the single screw holding he HD in place.\n* carefully slide the HD out of its socket.\n* carefully slide the HD back into the socket. Maybe do this twice.\n* put everything back and power up.\n \nYou may have solved the same problem I found; signal lost in the connector.\nThis happens in my case about 1 a year. The above routine fixes the problem.