Member Avatar for Fahmid

Hi, i have been using my desktop for over 2 years, and it hasnt given me this kind of problem before.

My internet connection just stops working (even though the icon in the taskbar is there, showing that it is connected) and everytime i have to right-click and click repair. This would temporarily fix the problem, and the internet will work for about 2-3 minutes and then stop again. I have to redo the whole process again, and the exact same thing happens.

It maybe helpful to know that when the internet doesnt work, i cannot access my router or any other computer on my LAN, meaning that it is not a router problem. I have other computers on my LAN, and they dont act the same way (using the same OS and everything). I am guessing its something to do with my Ethernet card, but i have the latest drivers.

Any help?

I am using:

Windows XP SP2
CPU: 3.4 GHz, Dual Core
2 GB RAM
Intel Pro/100 VE Network Connection

Router: Netgear WGR614v7

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Dani AI

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Given that you also lose access to your router and other LAN hosts when the failure occurs, this is unlikely to be a pure DNS issue. The XP "Repair" action flushes several caches (including ARP and DNS) and renews DHCP, so the fact that it comes back right after that points more to an ARP/cache or Winsock/TCP stack problem than to name resolution alone. @The Dude is on the right track to look at DNS, but your symptom of not reaching the router suggests the problem is lower in the stack. ’s DHCP idea is good to verify as well.

Quick way to prove it:

  • While the link works, run: ping 192.168.1.1 -t (replace with your gateway). When it dies, run: arp -a. If the gateway shows as INCOMPLETE or the MAC keeps changing, flush and see if it returns: arp -d *.
  • Reset the stack and DNS cache, then reboot:
    netsh winsock reset
netsh int ip reset resetlog.txt
ipconfig /flushdns
ipconfig /registerdns
  • Temporarily disable caching to test: net stop dnscache (or sc stop dnscache). If stability improves, the DNS client or a filtering driver is involved.

Driver/firewall angles to rule out on that Intel Pro/100 VE:

  • Device Manager > NIC > Power Management: uncheck "Allow the computer to turn off this device to save power."
  • Advanced tab: temporarily disable "Checksum Offload" and "Large Send Offload," and try forcing "100 Mbps Full Duplex."
  • Fully uninstall (not just disable) Trend Micro Internet Security to remove any LSP/filter drivers, then retest. Reinstall after testing.
  • Verify no duplicate IP: ipconfig /all; ensure only one default gateway and that DHCP is enabled.

If ARP looks suspect, you can test by pinning the router’s MAC temporarily:

arp -s 192.168.1.1 00-11-22-33-44-55

If that stabilizes things, you have an ARP conflict/poisoning or NIC/driver bug; remove it afterward with arp -d 192.168.1.1.

Recommended Answers

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Member Avatar for The Dude

I was gonna say maybe your MODEM is losing sync with the network (As mine does constanlty) but it seems like thats not your issue...

When the net stops,can you still hit the lan?? ( for me for example to my modem) Sometimes when mine locks up i can hit the modem and other times i cant.....

The network im on is garbage and thats why the modem keeps losing SYNC with the network all the time...

Good luck :)

Member Avatar for Fahmid

nope, cant hit the lan (router, other comps) etc.

my laptop doesnt have this problem though, even though it has the same OS and all.

Member Avatar for cwarn23

Check if your cables aren't damaged (if you are using LAN and not WAN). Also make sure you haven't got a trogen which is trying to access the internet as a trogen may try to crash websites which clogs the internet connection. If you are using WAN (Wireless Area Network) then it can be a lack of reception. That is a common problem with desktops as the signals cannot go through the metal case and cords can also interfere with the wireless reception.
If it is connected by cable, then check in the router if there is an option to authorise the computer to access the network.

Member Avatar for hammerhead

Try setting your ethernet ip to auto assign insted of using a static one.

Member Avatar for Fahmid

@cwarn
im using cable, and i tried using the same cable for my laptop and it works perfectly...so the cable is fine.

i scanned my computer twice with Trend Micro Internet Security and Sybot S&D and results showed that i didnt have any infections.


hmm i will try urs (even though mine is set to auto assign, i have this thing - Static Route. Im using this and ill see if it works after disabling)

P.S thx for the replies

Member Avatar for Fahmid

nope. tried taking off the static route. still doesnt work. i noticed something:

everytime i repair, and the little window says "Clearing DNS something something" my internet works.

Member Avatar for The Dude

OK your DNS is becoming corrupted....

Every time you FLUSH the DNS it works right?

Member Avatar for Fahmid

yep exactly. is there a way to fix this?

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