Been a member here for a while but haven't posted much. I have a problem with a windows xp sp3 machine that reboots when i attempt to run a specific application, and was wondering if i can find some help here. I get this info under description in event viewer after a reboot. Error code 10000050, parameter1 ffffffe8, parameter2 00000001, parameter3 804f384b, parameter4 00000000 The program is emulator software to enable a pci card to communicate with an as400 server...I'm not very familiar with this hardware/software. Software is BOSaNOVA Plus 32 ver 6.03. The user has an Icon on the desktop that points to an executable called Bsmdemul.exe, which i assume starts the emulator, whenever I double click that icon the machine reboots....any help at all solving this problem would be greatly appreciated. This problem did not occur until after the pc was upgraded to service pack 3, uninstalled norton, installed avg and windows defender and recent updates, plus clean with ccleaner and added more memory.