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No Upload Speed From Comcast Xfinity

This is a discussion on No Upload Speed From Comcast Xfinity within the Networking Support forums, part of the Tech Support Forum category. So, you guys are pretty much my last hope. I bought comcast xfinity internet about a month ago, and I


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Old 12-09-2012, 07:34 PM   #1
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So, you guys are pretty much my last hope. I bought comcast xfinity internet about a month ago, and I cannot get any upload speed. It's jammed up at about .40, and I'm paying for 3-4 mbs. My plan is 15/3, but the download speed is always over 20 mbs, while the upload is .40.

Comcast has been here twice with two new modems, and ran brand new cable under the house, because they said the signal was weak. Now it's strong, the modem is fine, and there is STILL no upload. I can barely upload pics to photobucket. Comcast basically told me there is nothing wrong on their end, and there is nothing they can do. The signal is strong, the modem is fine, the cabling is fine, and they are providing their service on their end.

My question is, what's wrong here? Is it a networking issue with my pc? It must be the pc, because the trail ends there, yes?

Any help would be appreciated. I went and bought a wireless router as well, but I never even made it to that.

PC:
intel i3 cpu laptop
4gb ram
windows 7
wired issue/cable connection
RCA modem from comcast
avast free anti-virus

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Old 12-09-2012, 07:46 PM   #2
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Welcome to TSF,

Have you tested another computer to find out if you have the same results?

What's the make and model of the RCA?

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Old 12-09-2012, 07:52 PM   #3
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No, but we were talking about doing that today. I'll go do that, and get the make and model number for the router.
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Old 12-10-2012, 06:27 AM   #4
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So, I hooked up an old celeron based laptop, and the speed problem disappeared. The first test was 23.44 down, and 4.11 up. Great speed. It looks like it is something with the pc, and not the connection or the modem, yes?

The specific make of the modem isn't listed, but the model is RCA - DCM425. On top is says "digital broadband".

The old pc with no speed problems runs on windows xp, and again the slow upload speed is on the windows 7 pc.
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Old 12-10-2012, 07:09 AM   #5
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What Brand and Model is the PC? Have you updated the Network Adaptor drivers from the manufacturers support site?
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Old 12-10-2012, 07:21 AM   #6
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It's a Dell Inspiron 17R. No, I've never updated any drivers. I don't think I have in the old laptop either, yet it picked up the upload speed right away.
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Old 12-10-2012, 07:33 AM   #7
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You can go to the Dell support site, enter your Service Tag Number and download the drivers. Be sure to use IE and do not use the Dell Download Manager!

Just download the driver file, save it to the desktop and double click to install

On the list of drivers, click on the Download File and on the next page, choose Single File Download . .
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Old 12-10-2012, 08:10 AM   #8
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Which ones? There are maybe 20 total, with about 5 under the "Network" category. There's 8 different categories of drivers. Wait, did you mean download them all in one file?
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Old 12-10-2012, 08:39 AM   #9
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Look in Devic Manager under Network Adaptors and install the one that matches your adaptor
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Old 12-10-2012, 09:17 AM   #10
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There's nothing under the network driver updates that I have. The internal Ethernet is an Atheros, and it's not listed. The ones that are listed are for wi-fi hardware, that I don't think I have either.
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Old 12-10-2012, 11:36 AM   #11
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Please post a screenshot of Device Manager with the Network Adaptor group expanded. . see the link in my signature for how.

How do I get into Windows Device Manager?
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Old 12-10-2012, 12:03 PM   #12
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Not sure what the mini port adapters are.
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Old 12-10-2012, 12:15 PM   #13
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Try the one for the Realtek PCIe FE Family Controller

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