My Dell studio slim will not boot up. On attempts to turn it on I get the message that there is no signal, other attempts to start in safe mode end up with a no signal after attempting a restore. On other attempts it allows me to sign in, but ends the signal to monitor after any attempt at any other operation attempt. Video card prob?
Hmm, I would go behind your computer and ensure that you don't have your cables tangled I would also make sure that you have your connection in nice and tight. Also, if that doesn't work you can try a different port sure.