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Internet borked after power cut.

PostPosted: Tue Aug 25, 2015 6:59 am
by Jez
Had a power cut to our street night before last. Ever since my Internet to my desktop is borked :(

WiFi is working fine so it's not the hub or the supply in.

When I run diagnostics I get an error

Local area connection doesnt have a valid ip configuration.

Any ideas here fellas?

Re: Internet borked after power cut.

PostPosted: Tue Aug 25, 2015 7:40 am
by Lee
You could try to reset the ip and flush the dns from the command prompt.

Just copy and paste the following lines, use the mouse to right click and paste though or you will just end up with a ^ in the command prompt

ipconfig /flushdns
ipconfig /release
ipconfig /renew


See if that helps bud.

Re: Internet borked after power cut.

PostPosted: Tue Aug 25, 2015 8:32 am
by Quietman
Try doing a full power off including the PSU and then power back on and see if that helps?

Otherwise you can try and set a static IP in Network configuration in the 192.168.1.X range with a subnet of 255.255.255.0 and see if that will let you access the router (usually on 192.168.1.254)?

Re: Internet borked after power cut.

PostPosted: Tue Aug 25, 2015 9:11 am
by Jez
I tried a power off by shutdown then plug everything out of the wall left it for a few mins and no change..is this what you mean Phil by psu also? Or is there another thing I should do there.

Where do I paste that gubbins Mr Lee? :)

Thanks for the ideas fellas will try them thus evening.

Re: Internet borked after power cut.

PostPosted: Tue Aug 25, 2015 9:16 am
by Quietman
Yeah, there should be a seperate I/O switch on the PSU itself but if you unplugged it and let all the capacitors discharge (all the lights go out) then that should be sufficient. Hmmm..

For Lee's stuff you want to do it one at a time in the command prompt.

Also if you have any other ports on the router to try, or any other cables, or even any other wired devices you can plug in that may help determine the issue. It's possible that the power cut has shorted the Ethernet ports on the router but it would be incredibly localised if so!

Re: Internet borked after power cut.

PostPosted: Tue Aug 25, 2015 9:47 am
by Lee
Press the window key + R then type in cmd and hit enter and up pops the command prompt window where you can enter it :)

Re: Internet borked after power cut.

PostPosted: Tue Aug 25, 2015 11:48 am
by Jez
Is this video pretty much what your saying Phil?

https://www.google.co.uk/url?sa=t&sourc ... Chy4V_fA2Q

I'll try this after I try Lees gubbins.

Re: Internet borked after power cut.

PostPosted: Tue Aug 25, 2015 11:59 am
by Lee
Yep it is :)

Re: Internet borked after power cut.

PostPosted: Tue Aug 25, 2015 12:01 pm
by Jez
And not to be bone but once I've done this and assuming g it connects ok should I go back into those settings and let it automatically assign the ip?

Re: Internet borked after power cut.

PostPosted: Tue Aug 25, 2015 12:04 pm
by Quietman
You'll want to check your routers dns settings and make sure they're working OK. I assume they are if your WiFi is working OK. Basically this will just check whether there is a software issue with the router giving your pc an ip by forcing it to be on the same network. If it doesn't work then it's likely hardware

Re: Internet borked after power cut.

PostPosted: Tue Aug 25, 2015 12:09 pm
by Lee
Aye should be fine to once connected again. But check the routers settings first to double check everything. Should be able to access by a web browser and typing in say for example 192.168.0.100 to get to the routers settings.

Check your manual or find the routers model number on it and google it to find out how to access it :)

Re: Internet borked after power cut.

PostPosted: Tue Aug 25, 2015 7:34 pm
by Jez
Those ideas didn't seem to work. The diag runs and just says it couldn't identify the problem. Are these photos any help?

http://i130.photobucket.com/albums/p260 ... dlkb6g.jpg

http://rs130.pbsrc.com/albums/p260/jg_b ... pg~320x480

Re: Internet borked after power cut.

PostPosted: Tue Aug 25, 2015 9:29 pm
by Lee
Try disabling the network then re-enabling it?

Re: Internet borked after power cut.

PostPosted: Tue Aug 25, 2015 9:57 pm
by Jez
If that means right clicking on the adapters and disable then aye :)

Why do I have two adapters listed though is that the same for everyone?

Re: Internet borked after power cut.

PostPosted: Tue Aug 25, 2015 10:17 pm
by Lee
Yep it was and only if you have two ports. That Tap adapter v9 I've never seen before. What firewall/antivirius software are you using?