So I boot up my PC, run the Realtek diagnistics tool, works fine. Reboot the pc in windows, NIC works fine, I am able to access the internet, and as Im browsing, boom it stops receiving data. I reboot and it no longer works. I reboot into real DOS mode, test the Realtek diagnostics tool again, it says theres no adapter connected (and i did not touch the innards of the PC during this session).

I cleaned the slots and the connections with IPA before this test, so im gonna rule this out as a hardware malfunction cause it no longer makes any sense to me.

I will still test those tools you guys sent me ASAP.

get another network card