Ethernet Not Detected Causing No Internet?
Jul 21, 2012
For starters I have a qwest m1000 modem and a netgear router.this morning there was a rather large thundestorm that caused my power to cut out while I was usin my computer.. once I got it back up and running the ethernet light on my modem wasn't liighting up.I reallly have no idea what to do. Everything but the ethernet is working. I can still get to my routers website but that's it, and I don't what to do there once I'm on it.Is it possible the storm messed up the settings? Or killed part of my pc/modem? On my computer the ethernet light next to the jack on the back is yelllow when its threw my rouuter, but when I plug my modem into it directly it doesn't light up at all.
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Mar 26, 2012
computer keeps restarting whenever i connect my network cable.
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Jan 17, 2012
My onboard adapter wasn't working so I bought a new dlink adapter. Adapter installed and is registering in device manager.. but it says that there is no ethernet cable connected. I have a laptop connected to the same router that is connecting to the internet. I switched out cables with ones that worked with the laptop and on the desktop before. I have cycled the router
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Sep 26, 2011
I'm having trouble with my ethernet port. I have a Asus g73jh computer running 64-bit windows 7 and i have an atheros ar8131 pci-e gigabit ethernet controller NDIS 6.20 for my network adaptor, that is fully updated and says is working properly but doesn't recognize when an ethernet cable is plugged in. The cable works on my xbox fine so I know that the cable works fine. I'm pretty sure that there might be something physically wrong with it or I just don't know.
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Jul 25, 2011
I got myself a weird problem. A few hours ago I installed Blueline's Driverscanner, but after the installation I lost my internet connection. I've checked the networkconnections and it's not in the list anymore.The really weird part is that there is a LED light coming from the cable, indicating it has a connection, but it is not making any.
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Aug 25, 2012
I could not boot the other day so I spent a few hour pulling everything out and checking memory components,etc.m taking the battery out finally fixed the boot issue but now there is no Internet or network detected or network adapter. It is not the router because pc in the other room is working fine on same connection. Mseems like a CMOS or bios issue. There was a message before boot about reverting to default bios settings. I can't update or remove driver because it is not detected and no Internet.
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Nov 8, 2012
my ps3 keeps saying ethernet cable not detected but it is connected.
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Aug 23, 2012
So i just moved my desktop into my dorm room and am using an ethernet cable supplied by the school for my desktop. Every 10 or 15 seconds i will lose internet connection because according to the troubleshooting on the computer there is apparently no cable hooked up (there is obviously). I've tried using both ports in the router and both yield same results and 2 different ethernet cables which both had the same problem. Others in the building have internet connection w/o problems which leads me to believe that there is something up with my computer. I run windows 7.
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May 14, 2012
I switched from DSL to cable about a week ago, I have two desktops connected via ethernet cable to the modem. One works fine, the second stays connected for 5 seconds, disconnected for 5 seconds, connected, again, etc until the system is on for 45 minutes or so and then it stays connected. I feel like it is probably a setting and that the system is trying to detect something during that time. Problem is I have no idea where to start and Comcast is totally useless. I have already replaced the cable because that's what they said the issue was, it wasn't.
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Jul 27, 2011
I've recently added a desktop pc to the home's wireless network (using a D-Link DWA-125 Wireless N 150 USB adapter rev.A2) and it used to play nicely with the other devices. After switching out the router to an Actiontec V1000H my computer has begun losing most connectivity when the PS3 is turned on.
The pc still sees the network and there is a little activity there it seems. Everything runs fine when the PS3 is off and in the Wireless Network Connection Status display the speed is usually listed at 65-75 Mbps. But when the PS3 is turned on it reads 6.5 Mbps with the IPv4 connectivity bouncing between "internet" and "limited". Windows' automatic diagnosis is "Cannot communicate with DNS server".
I tried assigning static IP addresses to the pc and ps3 thinking there was a possible IP conflict with the dynamic addresses. Thinking there could be a conflict with ports I read up on port forwarding but my knowledge of networking is limited and I'm not even sure if that is the problem.
There are alot of other devices connected, 2 laptops, 2 iPod touches an iPhone the PS3 and now this old desktop clunker. I figure it's possible that the router is getting overloaded with everything and the PS3 just pushes my computer's bandwidth out the window but I would think that there would be some noticable drop in performance on the other laptops as well, which there hasn't.
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Jan 3, 2013
decided first of all to connect an old router to the master (but not test) socket together with different cabling & splitter/microfilter - everything starting working almost perfectly (apart from downstream data rate was considerably lower than expected each time I connected - between about 1400 & 1600 Kbps - I have max. 8 Mbps).when I connected back my current router everything continued to be OK (apart from low downstream data rate) - until I would restart the current router and everything went back to very very slow.
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Jun 10, 2011
I have been using my DIR-655 for about 2 weeks now with Road Runner wideband services. Starting yesterday my internet became very slow and I discovered the cause was the router. I tried resetting it to factory settings and things will be fine and run smoothly for about 5-15 minutes but after that it goes back to being extremely slow. My speed tests would go from 10ms (normal) to 250-450ms. Before this issue occurred the Dlink was perfect, had full speeds. I am running a wire Ethernet connection.
I am currently using revB and tried upgrading firmware to 2.01NA which had no effect, but make my internet seemingly go back to normal for the first few minutes then nosedive again.I have also changed my speed/duplex settings in Network Config to 1gbs Full Duplex. I've also disabled QoS, and still no change. Not sure what else to do.
When directly connected to the modem everything seems fine. The modem is also the provided Motorola SBG6580 which I have called Time Warner to set the modem into bridge mode and have the DIR-655 connected to it.
With DIR-655 connected to PC
With Modem connected to PC
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Aug 6, 2011
After recently setting up a new computer, my entire network seems to randomly loose internet connection. The interval between connection losses is as short as half an hour but it sometimes goes several hours without dying; the connections is lost for anywhere between 30 seconds and 20 minutes each time it dies.The new computer is running Windows 7 and is using a Roeswill USB wireless adapter, but I have tired it with a wire and the connection still dies. I am disinclined to believe that this is caused by a virus simply because this is a brand new computer that has had only minimal use; to be on the safe side, though, I did do virus scans with multiple programs, however, I did not find anything.When the connection is lost, a yellow exclamation appears on the task bar's internet access icon. If I check my available networks, my network still shows full strength. I have tried disconnecting and reconnecting but nothing happens; I don't get any "failure to connect" type errors nor do I get connection back. I have also tried physically removing the adapter/wire and plugging it back in, but that doesn't do anything either.
I am under the impression that the new Windows 7 computer is doing something to temporarily kill the entire network, but I don't know what.For the record, my modem is an old Motorola and my router is an old Netgear. Both are quite a few years old, but I don't think they are the problem as my internet was fine before I added the new Windows 7 computer. There are wired computers and wireless computers running XP, Vista, and 7 also on the network.
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May 4, 2012
I have 2 computers on a network, and 3 devices that use wifi on the same network. Basically when ever computer A is connected, every single computer or device on the network runs extremely slow, if at all. I get anywhere between 1200-2000 ping on pingtest with 2-60% packet loss. Even the speed on the "infected" computer A downloads extremely slow. I'm at a loss for this problem, everything runs slow and its because of the one computer connected to it. I have virus software on this computer, but its not the best so i'm not ruling out malware or viruses right off the bat.
Devices: Blackberry, Iphone, macbook (all wifi)
Computer A
Runs windows xp 32 bit,
amd processor
onboard video
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The internet modem runs to a router (Dlink dir615) then to a switch (or hub, if you will) and then to the 2 computers. The entire problem is solved by unplugging computer A from the system. But other than that I have no alternative.
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Dec 9, 2012
I have 2 laptops and 1 desktop all connected to the same router, the 2 laptops are connected via wifi and the desktop PC is currently connected via an Ethernet cable, both laptops run windows 7 while the desktop runs windows XP and more or less every time the desktop is booted after a few minutes of normality connection to the internet is lost and the yellow triangle on windows 7 appears so to fix this I have to go into my routers settings via 192.168.1.1 and reboot which then solves the problem and all machines function as they should including the desktop.
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May 11, 2011
This only started about a week ago and everything was working fine before then. My router is causing my internet to be slow (I know this because it goes at normal speed when I am connected directly to my modem)
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Oct 28, 2011
Basically, my issue stems from the latest Boxee firmware from 2 weeks ago, that since then, its been causing my DIR 655 to reset itself, thereby disabling my whole home internet. It eventually turns back on again after a while, but the process doesn't stop.Basically, my DIR 655 is connected, hard wired to my boxee. I also have a NAS 323 hard wired to my router. I've had this setup on my boxee, reading all my movies/shows from my NAS without any issues for the past 10 months. Then the firmware from 2 weeks ago on the boxee started to cause my router to reset. I thought it was a hardware router failure, so I bought another of the same model to try that out, same thing happened though. When I rolled back my boxee firmware to the previous version, it no longer causes my router to reset.Now, besides me trying to figure out how to correctly block the boxee from updating on the router. Is there anything I can do on the router to tell it to prevent it from letting the boxee forcing it to reset? I'm on High Speed DSL. My internet provider modem is acting as a bridge to my DIR 655. Its been working fine for the past 10 months.
I've also done the following:Ensure DNS IP addresses are being filled in under Setup/Internet/Manual? You can find thse under Status/Device Info/Wan section. Turned off ALL QoS Turned off Advanced DNS Services if you have this option under Setup/Internet/Manual.Turned on DNS Relay under Setup/Networking.Setup DHCP reserved IP addresses for all devices on my router.Ensure devices are set to auto obtain an IP address.I have Set Firewall settings to Endpoint Independent for TCP and UDP..
Basically, I've put my boxee back to my previous firmware, and this doesn't cause my router to reset and disable my internet. But I don't get how/why a firmware update can trigger my router to do this?
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Mar 29, 2012
I have an E1550 less than 1 year old. Lately, I have been losing internet on the AT&T modem. I called AT&T but as part of their diagnostics, I have to plug the modem directly into the PC. I have loaded the latest firmware to the E1550.Lose Internet but wireless connectivity to router exists.Internet light on modem is out (modem is connected to router)Unplug modem and leave off plug in, internet light is still out.Unplug router, plug router back in - no internet connection but do have wireless connectivity to router.Take cable from modem to router and plug directly into PC internet light comes on in modem and I have internet from PC.Take cable from PC and plug back into router .I have internet via wireless.What I can't figure out is what could be happening in router that would impact modem internet connection. I have replicated this at least 3 times. Yes, the modem is a bit old, but since plugging it directly into the PC works, I'm thinking it has to be the router and I cannot figure out why unless there's some sort of electrical thing going on in the router.
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Mar 8, 2011
I have a Cisco 871w that has been a very great product for many years. I recently switched to Windows 7 x64 on my main machine and now i am having all sorts of issues with it.. I have done a bit of research and found that it appears that it might be the firewall on the SDM that is causing the slowness issues. what does happen is that downloads from known good sites will run really slow. If i hook up my Macbook Pro or my Windows XP laptop i have no issues at all. i have tried Disabling IPv6 as well as SMB2.0 and this has not resulted in a fix at this point.
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Apr 9, 2011
I can use my computer just fine right now, but whenever I need to restart it, when it comes back on the internet is no longer detected. I am connected through an ethernet wire directly to the internet, with no intermediate router or network.
After failing to solve the problem on my own, the only way Ive found that has been after to restore the internet connection is using the Windows Restore centre and restoring it to about a month ago; restoring it to only a few days ago does not fix the internet.
However, also when I use the restore function, immediately upon starting my system up again I get an error message saying that the system restore has failed and that nothing was changed. But the internet now works again.
Im not really sure what I should do to check out the problem further, let alone remedy it. I run Windows Vista, 64-bit. I can provide further info if need be.
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May 26, 2011
Just recently my internet got slow, and when it got slow nothing worked. I can connect to the internet and get on skype and some websites but when i try downloading something it says No internet Connectivity Detected.
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Mar 3, 2012
Am trying to share the broad band internet from the model to two PCs at home. One from LAN cable and the other from USB cable. But only the LAN cable gets connected. USB connection gets detected, but does not connect to internet.
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Dec 31, 2012
While there I had internet which was set up by a technician. However, now that I'm back, my computer shows that it's conected to the wifi here, but I am unable to get internet access. Is there perhaps a setting that could have been changed while I was in Peru that is preventing me from getting internet access in the U.S.?
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Jan 8, 2012
I have a working internet connection (AT&T) but it is not being detected during the router setup. Is there a manual setup procedure that I can try?
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Oct 24, 2011
recently I have been getting slow internet and download speeds at a later time in the day, when there is 3 or 2 internet connections that show up in my connections. one being mine virgin broadband, another sky and Bthomehub, whenever these connections are up my download speed on steam goes from 1.1mb/s to 250kb/s and i get the message from windows saying' 'windows has detected ip conflict'' I can still access the internet play games online fine, but my download speed is really slow and sometimes internet is slow aswell
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Aug 10, 2012
i have a problem suddenly cant connect through router anymore.. it said "DHCP server PPPoE not found" but the day before yesterday i can connect.. but if i connect without router (modem to PC/lappie) My router : Buffalo Airstation WHR-HP-G300N, i have tried several action like reset router into factory setting but couldnt solve my problem. i realize recently that DHCP thing cant find any IP address anymore.. is that my router problem/my ISP? when i try wired connection, i realize too.. My IP address, DNS become some what different than usual.
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May 11, 2012
i have my E1000 network detected by laptop and devices but can't connect to Internet. The E1000 is connected to Cisco 2100 modem and I can connect to Internet if I plug my laptop/PC directly to Cisco 2100 modem.
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Feb 5, 2011
Recently my wirless internet stopped working. I am running a HP dv 9000 laptop. The indicator light always stays amber (instead of turning blue when turned on) on external wirless switch. The wireless adaptor should be a Broadcom 802.11b. This does not show up in device manager, but my computer says the driver for it is installed. In the device manager there is one device with a yellow question mark beside it called "other device". Under this device there are three more devices called "base system device" with a yellow exclamation point next to them
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Sep 1, 2012
I have a WiFi in my home, when this laptop is under normal load, say like streaming a 360p youtube video, all the computers in my home will experience a huge lag and it becomes impossible to surf or do any internet activity (even the causing laptop itself will experience huge pings). The weird part is that the lag is at the LAN level, it is not related to my internet bandwidth. Because when I ping my local router (192.168.2.1) with other PCs during the lag period, I get 1000-4000 ms. However, it is usually 1 ms. I tried doing a stress test on one of my normal laptops by downloading at maximum speed, the problem did not occur, there was no lag, all my PCs did not encounter that lag and I still get 1 ms when pinging the router. It is only this laptop that when it starts downloading, my network will be flooded.
Another related problem with the laptop is that every time I log off then log in and try to reconnect to my network, It will not allow me, I will have to click on the windows diagnose problem and it will be fixed saying "Problem with wireless adapter or access point".
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Jun 12, 2011
I'm using cable (7.5Mbps) w/ unlimited bandwidth . I have 2 wired PC on the network and 4 PCs connected via wireless. My current router is a Netgear WND3400 but I had a Linksys WRT160n v3 previously.
My problem is that I've been getting very high ping in games (PC) and also on my PS3 like > 400ms over the past month but only after like 9:30pm or so. During the day it's always smooth. I called my ISP and they told me everything was fine from their end and the modem too.
1 PC on the network makes the other PCs lag even if that PC isn't downloading or using any bandwidth at all? I did some tests today, like: I open CMD and type: ping -t url... and I get like 6ms but when that particular PC is powered on, the ping increases to > 400ms.
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Aug 31, 2011
If my computer has been sitting for a while without using the internet and i open my browser the dsl and internet lights on my router shut off for about 15 seconds and no one in my house has internet and then it turns back on. this ONLY happens when it has been sitting for a while with the browser closed and my computer is the only one that makes it do it. also i don't have my computer set to sleep after a certain time, my monitor turns off after 5 minutes and that's it. i have a siemens gigaset se567 and my isp is telus.
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Mar 24, 2011
I'll access a site like [URL] normally the first 2 or three links will work that I click on and then maybe the third link will cause a timeout. I'll refresh the page after receiving the timeout notice and it'll appear fine. This is happening to other sites aswell. The reason I know it's the router is when I plug my PC directly into the modem, I don't receive this problem. The problem is happening with my laptop, PC and iphone. I've asked the ISP to go over the settings in my router to make sure they're all configured correctly and they say they're not trained on troubleshooting routers so they direct me to Netgear again. I don't really know what I should be looking at in the router page (I don't know much about routers/networking),
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Sep 5, 2011
A customer reported that their router experienced spikes (high cpu utilization) every 4 hours and claims that it is caused by snmp polling of the Ciscoworks server.
The process SNMP engine is the process that causes these spikes .We think that the job responsible of this periodic high CPU utilization. It's called "Vrf Collector Job" and it's runnning every 4 hours.Below the result of show stack PID and show version
*Sep 5 12:02:43.230 GMT+1: %SYS-1-CPURISINGTHRESHOLD: Threshold: Total CPU Utilization(Total/Intr): 56%/14%, Top 3 processes(Pid/Util): 557/39%, 488/1%, 555/0%
*Sep 5 12:02:43.286 GMT+1: %HA_EM-4-LOG: CPUTH:
Process 557: SNMP ENGINE
Stack segment 0x1CFC204C - 0x1CFC4F2C
[code]....
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