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Mysterious bandwidth problem
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- Re: Mysterious bandwidth problem
Mysterious bandwidth problem
19-01-2010 4:24 PM
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I have a number of PCs connected wirelessly to my ADSL router.
Until about three weeks before Christmas everything was fine, with speeds to all machines at around 5.5-7Mbps.
Suddenly, overnight, my main desktop PC (running Vista Ultimate) stopped accessing the internet, despite the fact that my wireless laptop (also running Vista Ultimate) still has no problem getting those speeds. I also have an XP desktop which seems to have the same problem as my Vista desktop, though that connects via Ethernet.
Researching vigorously, I learned that it might be due to one of the following:
1) Windows update
2) Firewall problem
3) Antivirus problem
I run Zone Alarm and AVG to protect my desktop, but McAfee and Windows Firewall on my laptop.
I tried turning them al off, reinstalling them, changing to Windows Firewall instead of Zone Alarm and reverting to the last patch prior to Windows Update running, all with no effect.
I pondered whether to install Windows 7 on my machine, but decided to wait.
In the meantime I ordered a second monitor for my desktop. The relevance of this will become obvious.
Weeks passed, still no internet from my desktop, though I did occasionally see "Unrecognised" messages in Network and Sharing Centre.
My second monitor arrived and I installed it.
Since I installed the second monitor, I'm getting bandwidths on my desktop of around 0.5Mbps! I'm writing this from my desktop. I can['t understand why installing a second monitor would make any difference to my desktop's bandwidth.
Regardless, any internet is better than no bandwidth, but how come when I run Speedtest.net on my laptop I get 5Mbps+ still, yet when I run it on my wireless desktop (which is next to the laptop) I only get 0.5Mbps? Incidentally, I had my desktop wired to my router originally, but when it wouldn't work I bought a wireless card, hoping that would fix the problem (which it didn't).
Does any one have any ideas? Any suggestions for things to try?
Until about three weeks before Christmas everything was fine, with speeds to all machines at around 5.5-7Mbps.
Suddenly, overnight, my main desktop PC (running Vista Ultimate) stopped accessing the internet, despite the fact that my wireless laptop (also running Vista Ultimate) still has no problem getting those speeds. I also have an XP desktop which seems to have the same problem as my Vista desktop, though that connects via Ethernet.
Researching vigorously, I learned that it might be due to one of the following:
1) Windows update
2) Firewall problem
3) Antivirus problem
I run Zone Alarm and AVG to protect my desktop, but McAfee and Windows Firewall on my laptop.
I tried turning them al off, reinstalling them, changing to Windows Firewall instead of Zone Alarm and reverting to the last patch prior to Windows Update running, all with no effect.
I pondered whether to install Windows 7 on my machine, but decided to wait.
In the meantime I ordered a second monitor for my desktop. The relevance of this will become obvious.
Weeks passed, still no internet from my desktop, though I did occasionally see "Unrecognised" messages in Network and Sharing Centre.
My second monitor arrived and I installed it.
Since I installed the second monitor, I'm getting bandwidths on my desktop of around 0.5Mbps! I'm writing this from my desktop. I can['t understand why installing a second monitor would make any difference to my desktop's bandwidth.
Regardless, any internet is better than no bandwidth, but how come when I run Speedtest.net on my laptop I get 5Mbps+ still, yet when I run it on my wireless desktop (which is next to the laptop) I only get 0.5Mbps? Incidentally, I had my desktop wired to my router originally, but when it wouldn't work I bought a wireless card, hoping that would fix the problem (which it didn't).
Does any one have any ideas? Any suggestions for things to try?
3 REPLIES 3
Re: Mysterious bandwidth problem
19-01-2010 4:39 PM
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This may or may nor help but I had a similar problem with a family members connection, I solved it by changing the channel on the wireless router, something they had recently bought had started interfering with the wireless connection.
Worth a shot anyway.
All the best
Michael.
Worth a shot anyway.
All the best
Michael.
Re: Mysterious bandwidth problem
19-01-2010 4:42 PM
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Just too add that I think the source of their problem was Christmas lights. Since you state there weeks before Christmas seems similar maybe.
Re: Mysterious bandwidth problem
19-01-2010 10:10 PM
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I tried the channel change idea a while ago but to no avail (and we didn't have any Christmas lights this year, so it's not that either - though a nice idea! )
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