I run XP, SP 2 with further upgrades on a Dell Optiplex 280, 1meg ram, Radeon X300 Out of the blue, when I turn on the machine, it reaches the logon icon and hangs every time. I ran both Nortion virus checker, Spysweeper and AdAware just two days before the problem, Spam. Norton checked the disk just a week before this problem, Spamwasher has been filtering my mail as well as the university I get mail through. I have not been doing P2P or other unusual operations. No new hardware or software. I tried using the "open recent configuration that worked" for six dates in the last two weeks, but the system message said that it failed in each case. The device manager shows all my hardware operating correctly. The blue screen after the freeze shows these error messages: OX0000008E, (OXCOOOOOO5, OX804DA12E, OXEB186504, OXOOOOOOOO). I then elect safe mode. Thanks for any suggestions you have.