I have a Dell Dimension E520 running windows XP I power up and get the POST screen everything looks good there then I get windows loading screen then I hear a click and the screen goes black, no error codes or anything. The power button is still lit on the computer but nothing responds, have to power it off and back on then same thing happens. I can boot into safe mode with networking and it works. I ran the Dell utility disk that came with it and it said the memory was bad, it had 2 1gig installed, so I ordered new memory board, installed it the system recognized it but still failed to load. I tried to do a restore but it says there are no restore points. any suggestions would be greatly appreciated.