I have a Windows XP SP3 Home Edition computer.
Desktop:
2.5ghz P4
768mb DDR Ram
40gb 7200 HDD
The computer "shutdown dialog"/"turn off computer window" keeps coming up at random times (the window where it says turnoff/standby/logoff. However it always comes up the first time when I turn on the computer. Then it comes up randomly while I am web browsing.
Could it be a virus? It was a recently installed Windows computer.
Could it be .NET Framework? I have recently installed it to play Terraria.
What could it be?

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