LightningsalesUK :
I just installed windows 7 Ultimate onto a HP Compaq Pro 4300 and when I went to install Intel Ethernet drivers I was given this message.
Delete all previous drivers...
Turn off all security and firewalls.
If you have loaded any "free" programs, delete them all.
Now install drivers, from the HP website ONLY. (use a working computer to obtain the correct drivers, than save them to a USB stick, etc...)
Security and firewall will block drivers from installing. Turn it all OFF when installing programs or drivers.
Once the driver is installed and working, turn security back ON.
Do not use any "free" security. Use professional security only.