Hi:
Do you have some kind of add on ethernet card?
I decoded the hardware ID's and it decodes to a:
Your Device Info
Compaq NC3123 Fast Ethernet NIC
Hardware ID
PCI\VEN_8086&DEV_1229&SUBSYS_B1440E11&REV_08
PCI\VEN_8086&DEV_1229&SUBSYS_B1440E11
PCI\VEN_8086&DEV_1229&CC_020000
PCI\VEN_8086&DEV_1229&CC_0200
The newest driver HP has for that card is from 2004 and it won't work on W7 64 bit.
If the onboard ethernet adapter is defective, you will need to purchase a windows 7 capable ethernet adapter.