Vista Error, black screen, pwsave error.

I am running Windows Vista 64 bit. Not sure where exactly this problem should go so I'll stick it here.

So today I wake up and turn on my computer and then leave for a few minutes and come back and turn on the monitor. My monitor turns on, but it says, "No signal" and goes back to black. (Still turned on.)

Odd, I think. I turn it off and on and same story.

So I am I forced to turn off my computer by holding down the power button. I turn it back it, and the screen shows up. Well that's good. I say to start the computer normally. When I load up I get this error message:

"Pwsave:

The object invoked has disconnected from its clients."


Um, that's odd I think. So I turn off my computer again and restart it and this time no error pops up. However, I notice my Video Card fan is running quiet. Somehow it got reset back to 27% speed! So I bring it back up to 46% and here I am now, my computer APPARENTLY running normally...

Any idea what happened?