Connection keeps crashing!!!

The thing is: I connect to the internet, and connection is steady for some time, but suddenly it crashes, no matter what i am doing (usualy it's a game like World of Warcraft or Frozen Throne Online). I have icon in system tray that says I am connected to the internet, it shows me connection speed (10.0 Mbps LAN) and all that, but i have no activity on the internet. If i try to open page like (Google) it doesnt open the page, it just says "Finding site: www.google.com", and after several seconds shows me that the page cannot be displayed. If i was playing online game at that time, it just freezes the game and disconnects me from online server shortly after. This thing always happen when i connect on the internet, just sometimes it happens 30 seconds after i connect and sometimes it lasts for 1 or 2 hours and then crashes. After i reconnect, it will be steady again, and crash after 30 seconds to 2 hours.. I tryed to access router via browser using IP (192.168.0.1 and all similar IP that can be used for accessing router) but it doesnt open router configuration, just some sites that contain one of these numbers. So i cant even manualy configure router, and i called ISP and they say that reseting the router is a bad idea, but they dont know how to solve my problem either.
I am running Windows XP SP1 (had SP2, but uninstalled it in desperate try to fix internet), i have Realtek RTL8139/810x Family Fast Ethernet NIC and Senao router... I am tankful for any help..

I'm having the same problem with my desk top. Mine says that I'm connected at 100.00 mbps. When I get disconnected I have to right click the connection and and disable it and then right click it and enable it. I'm not using a router, my wireless antenna just plugs into my confusser.

Looks like it can be the network card problem. Make sure the card is plugged in properly. Check the driver status and see whether the status is ok.

How to check network card driver status in Windows XP

Even if the driver status is ok, I would advise you to uninstall and reinstall the driver. Try to get the latest driver from the vendor website.

If the problem persisis even after uninstalling/reinstalling card driver, try to replace it with other spare card, and see whether it works well.

Hope helps..

Thanks I will try that and see if it works.

Im afraid that's not going to solve my problem.. I reinstalled and downloaded bunch of drivers, and none of them made progress. I still think it might be firewall on the router thats blocking some sites but i cant change firewall settings. connection was OK for several months, and then started to mess up. I dont realy know what did i do, if it was my mistake.. Help please!

Possible problems & solutions:

Weak connection => better antenna, move router

Wireless phone interference => better antenna, move phone base and/or router, change router channel, get phones that aren't 2.4 GHz.

Neighbor's router => directional antenna, move your router closer, cover your wall with aluminum foil (just kidding ;-)

Security software bug => Turn off router's encryption security. To keep intruders out, set it to only accept the MAC addresses of your devices.

Concerning last reply on this thread:

Weak connection: Someone said to me that i have one of the best antennas that can be found here, and router is connected to computer by wire, not wirelessly, so i think that cant be the problem..

Wireless phone interference: Router channels can not be changed, couse i cant access router configuration (as i said before). I dont have phone that uses 2.4GHz, unless cell phones are using it. And to say again, internet was working fine for couple of months, and then started to mess up.

Neighbor's router: I don't think someone around me is using wireless internet, or routers, router cant be closer then right now, and not to forget - walls are already covered with foil!

Security software bug: Once again, I can't access the damn router. Maybe someone can help me on how to check my LAN IP address, and make my browser accept it and open configuration window.. ( i tryed to type /ipconfig in "cmd", and copy/paste LAN IP from it to browser, but browser did not open desired window... :-( )

Anyway thanks for repying but i think i can count on few more months of suffering with lame connection... (before you ask, i cant install DSL nor Cable Network )

If not already, your local IP should probably be in the 192.168.1.x format. Under your network settings, check your LAN properties, and get the properties of Internet Protocol (TCP/IP).

At my office, someone set our local network IP format to 192.0.0.x and it's been a real hassle every time new network equipment is added.

If you're connected to the router by ethernet rather than wireless, then none of the things I mentioned before are causing the problem. Maybe a router reset is your only option. Then you can connect at 192.168.1.1 and set it up again.

"...i cant install DSL nor Cable Network..."

If you don't have DSL or cable, how do you get your internet?

Are you running a personal firewall on the PC? Sometimes those settings can be too aggressive.