BleepingComputer.com: Dropping Packets

I'm using a Linksys WUSB54GSC on one of my computers. I just recently upgraded the computer to Windows 7 Professional x86 RTM. Ever since the upgrade (in which I did a fresh/clean install by the way), accessing the Internet has been horrible.

I tried using ping and the respone can be from anywhere from 10-1500ms. The network adapter worked perfectly in Windows Vista Home Premium 32 bit with SP2. It suffers packet loss anywhere from 25-50% of the packets (Request Timed Out error from ping). I have tried pinging the router, outside websites, and even other computers on the network, same thing happens. I also tried switching to OpenDNS, which didn't affect the network performance.

I checked the advanced properties and the adapter is operating at high performance mode and is correctly set for 802.11g.

My router is a Linksys WRT54G with DD-WRT Micro. But as I said, it worked perfectly with Windows Vista, so I doubt this is the problem.

Does anyone have any suggestions on how to fix this problem?


Specifications of the Computer
Intel Core 2 Quad Q6600 at 2.4GHz
Abit IP35-E motherboard with 14 BIOS
eVGA 9600GSO stock clocked
Windows 7 Professional x86 RTM
2GB RAM (DDR2 800)

Did you see if your NIC has Windows 7 drivers? I'm sure Windows 7 has drivers but you'll need to see if the manufacture of the NIC has Win 7 drivers

CaveDweller2, on Sep 14 2009, 11:07 PM, said:

When I looked at the manufacturer site, all I saw was Windows XP.

I think it's using a Windows Vista driver. I just find it odd that it is connected in the first place if the driver isn't supposed to work.

Most of the drivers that get installed from Windows will make the piece of hardware work but it might not work correctly.

And I say that because of what you said. That you've pinged things on your LAN and you still experienced packet loss. What happens if you ping the loopback - 127.0.0.1?

Did you download the drivers for Vista and install them? or are you just using what Windows 7 installed?

CaveDweller2, on Sep 15 2009, 08:31 AM, said:

I used the installation CD to install the drivers, the manufacturer site only contains XP for some odd reason.

If I ping the loopback it returns all of the packets in less than one ms, even if I change the number of packets sent, it still returns them all.

And this is a wireless connection correct?

You could try resetting the TCP/IP stack. From a command prompt type netsh int ip reset resetlog.txt hit Enter and reboot the computer.

If that doesn't work you could remove the device from Device manager and uninstall the software in Add/Remove programs, reboot and let windows search for drivers. If that doesn't work you have the install disk.

Yes, this is a wireless connection.

I tried resetting the TCP/IP stack, but it didn't work.

I will try removing/reinstalling the device this afternoon.

I registered because I had this trouble too. I am using a wired connection, but I had the same thing - I could get great speed with no dropped packets on Vista, but when I upgraded to Windows 7 I had a lot of dropped packets.

I went into my NIC settings and manually set my card to 100 Megabit / Full Duplex. This completely fixed the problem. Hope this helps.