Stuck without internet on your Windows 7 machine? You’ve just hit the classic "Catch-22" of PC repair: You need a driver to get online, but you need to be online to download the driver.
Realtek, Intel, and Broadcom all provide these as downloadable .exe or .zip files, typically titled Install_Win7_7130_07252019.zip. You put it on a USB stick using another PC, then run it on the offline target machine. network adapter driver windows 7 offline installer best
If you aren't sure what card you have, go to Device Manager, right-click the Network Controller > Properties > Details > Hardware IDs The Ultimate Guide to the Best Network Adapter
Microsoft ended support for Windows 7 in January 2020. Consequently, major hardware vendors (Intel 12th gen, Realtek 2.5Gbe newer revisions) have stopped producing Windows 7 drivers. You put it on a USB stick using