This message was posted on behalf of Intel Corporation
Like Doc mentioned, this adapter is not compatible with Windows® 10. The last driver it received was actually for Windows* 7.
As far as alernatives go, you do have a couple. The simplest being to purchase an USB Wireless Adapter, which are relatively cheap and simple to install (plug and play, usually).
Aside from that, you would need to contact the manufacturer of your computer to see if there's a newer adapter that may be installed in place of your Intel® PRO/Wireless 3945ABG, or downgrade back to Windows* 7.
- Going back to Windows* 7
Note: Any links provided for third party tools or sites are offered for your convenience and should not be viewed as an endorsement by Intel® of the content, products, or services offered there. We do not offer support for any third party tool mentioned here.
We do hope this information helps. If you need any further assistance, just let us know.