Is there any danger in sleeping with the PC is running in bed room?

Regarding any emmissons, electromagnetic fields or something. Because many times I woke up with a sort of headache!

I haven't heard of anything about this, beyond the fact that I had a childhood friend whose mom always made him unplug the computer near his bed before he went to sleep. My suggestion would be to try sleeping without it on and see if the headache goes away, or move the computer to a different room. It probably causes no harm, but it can't hurt to move it or try something different.

Note to the above "poster" (flamer) who is trash talking the asker here: No one should call anyone else an idiot on Answers to begin with. This guy asked a serious and valid question and doesn't deserve your crap. Not to mention that you have no right to call ANYONE an idiot, given your inability to use the English language correctly. It's "you're," not "your." Read a book and/or repeat the 6th grade.

your an idiot..um I mean YOUR AN IDIOT!!!!!!!

There's no danger.But it just a waste of electricity and money.Really.

I leave mine on all the time. I think you need to stop drinking booze just before bedtime you should check out A.A.

Could be that you are sleeping on the keyboard.

I would say monitor has too much radiation.
more than %80 of radiation is from its back.
I strongly recommend you to turn off the monitor when you are slipping and always avoid to sitting behind the monitor.
god bless you