These are work computers a latitude 510, and 520. The 510 earlier today ran slowly for 7 hrs while on job. I went to a CPU part store and bought 1 gig Ram and installed. I started acting funny when you got past the log in screens going to window desktop is a 2 hrs wait. It will boot though in Safe Mode. Diagnostic showed DST short status (failed) Error Code 1000-0146. The backup computer a D520 in the same night went into a reboot cycle right before starting window. After I had in my truck on the moblile desk installing my air card and was fixing to go into the office and pulled my card out before the computer shut down.
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