What is this?-svr#0001

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This (svr#0001)always pops up after my system finishes bootin, of which this pop up freezes my cursor, my mouse dont work until i bring up the task manager(ctrl+alt+del) and close the pop up. After which i can click every thing else but cant click on any item on the task bar i.e the area around the time bottom right corner ofthe screen..i tot it was virus i updated and scanned..nothing, someone tell me wat this means.