randomly disconnecting "default gateway is not available"

[chaosrealm93]

Hey guys,

I've been getting this problem quite a lot recently. My computer would randomly disconnect from the internet. When I go to diagnose it, it would say either "default gateway is not available" or "network adapter is disabled" or "reset the local area connection adapter". I try to fix this with a restart, but more often than not, it would BSOD with a 9F code. After restarting, the networking would work again for some time before repeating the cycle.

Any guesses? Thanks.

*could this be a sign my network chip/motherboard is starting to die?

 

[2xg]

Hello,

Is this a wired or wireless issue?

Can you please give us some more detail info and also output? Follow the guidelines here. Thanks.

 

[chaosrealm93]

1. wired
2. rogers
3. either DSL or cable
4. Cisco DPC3825 DOCSIS 3.0 Gateway
5. avast free antivirus

ipconfig /all txt file attached

 

[chaosrealm93]

asdf

 

[2xg]

Apologize for the delay, been so busy lately and thank you for the info provided. Your ipconfig/all output looks good, no issue there.

Can also post your Speedtest?

Most likely you're using Cable under Rogers. Any other computers having similar issue as yours? Would be nice if you can plug in another computer to your modem/router.

 

[chaosrealm93]

no problem. speedtest attached (i dont think it has always been this slow.... =\

yes, im on robber's cable and no. i have a macbook thats on wireless and connect to the same network. i have no disconnection issues.

 

[2xg]

Thanks! Your speed looks fine....

Edit: Please do this first....

Refresh your wireless networks by removing all Wi-Fi Profiles then re-add your own SSID with the proper encryption.
http://kb.netgear.com/app/answers/detail/a_id/20055


If refreshing your wireless networks didn't help at all then follow the next steps here:
- Do a scan in your computer for possible infections/nasties, it won't hurt. I use Free SuperAntiSpyware or Malwarebytes. You don't have to post the logs. Test your connection after.

- I would also suggest to update your Wi-Fi adapter to the latest that might get rid of the BSOD.

 

[matts6887]

yea-that speed test you posted sure is pretty slow. One thing that 2xg didnt mention that you might also want to try is power cycling your modem and router. Unplug both the modem and router for about a minute or so and then plug the modem in first; let that boot; then plug the router back in and see if that helps at all. Doing this will help to refresh the connections to the isp. If it comes down to it in the end you might need to contact the isp and see if there are any issues going on in your area that they need to address.

 

[chaosrealm93]

@2xg, matts6887, i've tried that. both pulling the power on the modem/router (same box in my case) as well as logging in to 192.168.0.1 and doing factory resets. my computer is wired, so i cant really delete any wifi profiles.

i'll do another scan with avast

i reinstalled the networking driver, but i still get these problems randomly

 

[2xg]

Sorry about that, I was helping another OP last night with wireless issue and gave you the answer that wasn't meant for you.

Please scan your computer with SuperAntiSpyware as well.

Also, might be worth it to uninstall Avast for now as part of debugging and use this utility.

Is your computer current with Windows Updates? To be safe, you may install Free AVG or MSE to replace Avast.

 

[chaosrealm93]

bwahahah!!

but..but... i like avast ='(
okay, i'll uninstall it for now

yes, my computer is current with windows update

 

[maurisrx]

This page may help: Default Gateway Not Available - Default Gateway - Windows 8.