Another large this I've seen is under device manager, I don't see anything about my network card there or adaptor. I see under other devices tab to things to click on that both say ethernet connection (or something like that).
I take it that you have gone to Control Panel > System > Hardware > Device Manager - This list should contain all recognised items that are installed -
Reading from mine it has Computer, Disk Drives, Display Adapters, DVD/CD-ROM Drives, IDE ATA/ATAPI controllers, Keyboards, Mouse, Modems, Moniters, The next item that should be listed on your Device Manager is Network Adapters
- If this item is not listed then your system is not recognising your Adapter Card -
If this item is listed then click the + next to it, if it has one, and see if there is a !
or other symbol next to it -
This now means you have faulty/outdated/unrecognised drivers for your card - If you cannot get/update drivers , then replace the card as it may be faulty -
Thank You -