I have the disk but it does not go where the above stated. after a few clicks .. tryunbg safe mode and othe choices... it eventually goes back to this scree __

I have a 2 year old Dell Ispiron One 2305. About 2-3 times a day the screen just goes black. It is a lighter, back-lit black, compared to the dark black when the machine is completely off. The power button is a constant white when this happens.

I have tried installing Windows Server 2008 R2 three-4 times today. I keep getting a blue screen after the boot disc gets to "Loading Windows" part. The code is 0x00000f4 (0x0000000000000003 , 0xFFFFFA8000925060 , 0xFFFFFA8000925340, 0xFFFFF8000C784DB0)