Strange issue with one pc

Dis86 · 8 Feb 2017 at 20:34

So...have an odd one. I have 7 devices within the house that use the WiFi. I can have any combination of them connected and it will be fine...except one pc. As soon as it connects it kills the other devices.

So for example I can download at 4megs a second in my pc and ps4 whilst streaming on an ipad. However if.I connect this other pc to the network I can't even browse chrome on another device.

Any.clues?

Dis86 · 8 Feb 2017 at 20:53

Router is an ee bright box, latest version.

Pc has just been completely wiped and rebuilt. No chance of a virus etc. On it. Running Windows 10.

Dis86 · 8 Feb 2017 at 20:57

Doesn't seem to do the same with a wired.connection

Dis86 · 8 Feb 2017 at 21:04

bremen1874;30484569 said:
Have you tried changing the router's wireless channel? It shouldn't matter but there was a recent thread where that fixed a similar sounding problem.

Trying that one now.

Edit: no joy.

I've just checked the network usage on that PC and it's uploading at about 7 megabytes/s. However when I then click the tab to view what's using it it instantly drops off. Weird or what?!

Dis86 · 8 Feb 2017 at 21:14

This is both. From what I'm seeing there I can see the reason, it's absolutely hogging the bandwidth but I'm not sure why.

Dis86 · 8 Feb 2017 at 21:29

Wireless N. I believe the channels are bonded although it may be a moot point as it doesn't look like the 5ghz channel stretches all the way up here so the devices are just connected to the 2.4.

Dis86 · 8 Feb 2017 at 21:34

mmj_uk;30484697 said:
I'd try unbonding them and see if that helps?

No change.

Dis86 · 8 Feb 2017 at 21:40

mmj_uk;30484705 said:
What network card does the PC that's causing the problems have? could it be faulty? are the other devices disconnecting or just being jammed?

That was my first thought but I've swapped the hardware around to check. It's definitely tied to the PC. As I said earlier something on it is whamming up the network usage. Just looked at my router status whilst changing the settings and upload speed is 6.48 Mbps yet the pc was showing in excess of 7 used.

Dis86 · 8 Feb 2017 at 21:50

mmj_uk;30484746 said:
So your freshly formatted PC is physically uploading 7Mbps when connected?

What do you mean swapped the hardware around? have you checked your PC isn't set to bridge mode or something?

Just had to google what that means. And no it's not.

But yeah, freshly formatted (couple of months back but very light usage) PC is hammering uploads. Only programs on it are MS office. GF uses it for work only.

Dis86 · 8 Feb 2017 at 22:04

Yeah, both are legit. I'm going to try and see if I can find out what's causing the huge data usage tomorrow - every time I've tried tonight though it disappears when I open the monitor which to me is highly suspicious!

Dis86 · 9 Feb 2017 at 15:06

asim18;30485150 said:
Try running "netstat /b" in command prompt while it's uploading.

It tells you which processes are using the internet when you run it.

That's what I was trying yesterday and as soon as I'd do it the traffic would cease! Very strange behaviour.

neodude;30486591 said:
Can you not set a static ip for the pc and then limit the bandwidth for that ip within your router? Does your router have any kind of packet capture facility?

I don't think I can have individual devices do that but I'll check.

Thanks for all the suggestions so far folks. I'll try these last few options but I'm seriously starting to think there's either a virus on there or some ms software misbehaving.

Right now I'm thinking back and om half sure it never did this before the install of office.

Dis86 · 10 Feb 2017 at 15:55

Well...looks like it's solved. The issue was windows 10 and office. They were basically acting as some sort of major p2p update hub. Disabled the options within windows and all is good!