Lightening fast network speed has slowed to a crawl. The machine has two wireless network cards:
-TP-Link 450 Mbps Wireless N adaptor
-Ralink RT61 Turbo
With the "Local Area Connection Status" window open I could see the computer receiving a good volume of download and then it would stop. Sometimes it might recover briefly, other times not. To complete a download, I had to disable/enable the network card and then a burst of good download activity before it stalled again. This is a Windows 7/64 machine. Another Windows 7/64 machine on the same network is having no problem.
Checked that the latest drivers
are installed. Disabled both cards in Device Manager. Enabled the Ralink card when it came active it also brought along "Microsoft Virtual WiFi miniport adaptor." No clue why this popped up. I have an internet connection (a very slow one - 0.5-1 Mbps download with a 50Mbps connection to the ISP - Verizon FIOS). Although I have a connection, in the system tray there is a big red "X" on the wireless icon. Don't know if that is a clue or a quirk
Physically removed the NIC cards, removed the power cord, powered on without the cord to drain any residual memory. Reinstalled one at a time. No change, except Windows is complaining about the driver
on the TP-Link card. Will try to find a fresh copy of that driver that was originally downloaded from the Internet.
Have scanned for spyware, virusus, malicious software, System Mechanic - no change.
Any and all suggestions welcome!