In the summer of 05 I had purchased a DELL Dimension 4700. It was $600 for 1GB RAM, ATI X300, P4 2.8GHz, and came with a free 19inch Dell LCD, and a free printer. I had also spent an extra $90 to get the Dvd Drive Updated to DL. Now as me being me I never used it until yesterday. I had flashed my 360 and was burning a backup copy of Dark Sector. My burner kept stopping at 30% giving me the "Power Calibration Area Is Full Error" (Means Laser Is Not Working). And because of this I wasted many expensive DL Dvd's (Thats another story). So after wasting 7 hours looking this error up I found that its a common error for BENQ 1620 (The drive that came with my system). So I contact DELL tell them my problem. At first they are very nice. Then they tell me some "Trouble Shooting Steps" (Or so as they call them). So anyways. I knew that deleting a registry file was not going to make the laser work. So after looking at some DL burners at the friendly newegg.com. I decided to give registry deleting a shot. Before buying a new DL Drive. Ok well I delete the registry files, and reboot. I go downstairs. I come back up and notice it keeps rebooting. So I knew something went wrong. Then my fans kick in and it gives me the "Friendly" Blue Screen of death. I reboot in safe mode, then boot into "Last Good Configuration", and everything is working fine now. Wow thanks alot DELL thanks for "Trying" to kill my system. 