Intel 6200/6250/6300/6205, Win7 / Win8 64 bit Enterprise Edition, Dell Update Package. WiFi driver version: 15.8.0.5

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 just replaced a hard drive in a Dell 8300 and I'm getting ready to reinstall windows 7 back in. I also need to reset the administrators password. My sister-in-law has no idea what the old password is. I'm not sure how to change the password. Help Please