Starting with my home PC setup:
OS - Windows XP Pro, SP2 (XP Firewall Off)
NIC Controller :Integrated Intel 10/100 Ethernet
Cable Modem : Motorola Surfboard SB4200, (no driver update at Motorola site)
Router: 4 port Wireless Linksys BEFWS11 V2 (latest Firmware from Linksys updated)
AntiVirus Software: Norton AntiVirus and Firewall
Other Software: Ad-Aware SE Personal Edition, SpyBot Search & Destroy, HiJackThis, WinsockXPFix,
Windows XP AntiSpyware Beta Version
I have been losing Internet connection after a few minutes (5mins at most) over the last month or so. I can send and receive Email without any problem, Before it fails, the Internet connection sits and churns for a long time before "The page cannot be displayed" error is displayed. The only way I can reconnect is to reboot the computer. Strangely, I do not lose the connection when I boot into "Safe Mode with Networking". I can surf all day.
The problem happens only on my desktop machine and not on my laptop. The two machines are connected to the Internet through the same Cable Modem and Router. I can also surf all day on the laptop without having to reboot even once. So that should rule out the Router and/or the Cable Modem as the source of the problem. When both computers are connected, the Router port for the laptop shows a lot of activity but the port for the desktop appears rather sluggish and it eventually dies. Changing ports and switching cables have not helped so far. Removing the laptop from the setup does not help. I have gone through at least 4 long troubleshooting sessions with my ISP Tech Support.
In addition, the following attempts at solving the problem have not been unsuccessful
Reset Router and Cable (per ISP Tech Support)
Repair LAN connection
Repair Winsock with WinsockXPFix
Bypass router and connect directly from Cable Modem to computer
Connect computer directly to Internet (physically moved computer to a different location)
UnInstall XP Service Pack 2
UnInstall SpyBot, Ad-Aware
Disable Norton AntiVirus
ipconfig /release/renew does not work
I have visited, read and tried a lot of the tricks and suggestions from a lot of very helpful technical forums hoping to find something that will work. So far, nothing has worked. I think the problem is in my desktop computer but I have not been able to isolate it. Is it a faulty Network card? If so is there a way to test the card to verify whether it is good or bad before I go out and buy a replacement? Could it be a malware on my computer? I have been diligent about inspecting and cleaning up malware and viruses, if any by using Spybot Search & Destroy, Ad-Aware, and most recently Microsoft's AntiSpyWare software. If it is a malware, is there a product out there that is powerful enough to find it after the products I have used so far have failed?
There has to be an answer to this problem which may not necessarily require the painful process of backing up my critical files, reformatting my hard disk and reinstalling my drivers and restoring my files.
Any help to resolve this issue will be greatly appreciated.
Edited by Charles Baah, 12 September 2005 - 12:33 PM.