[ptcadoc]

I’m a medical person, not a techie, so if the solution to this rather aggravating problem is idiotically simple, please accept my apologies.

I’m using a Windows XP Samsung NC10 netbook and connect to the internet wirelessly. For about a month or so, after a variable period of time (minutes to hours) I am no longer able to browse the internet. However, I am able to PING as well as tracer-t various sites, suggesting that I am connected. Also, I’m unable to check email using an email program called The Bat!. I do note that Limewire sometimes remains connected albeit at low speed. The only way to get back on the internet is to REBOOT. Over the last few weeks I’ve browsed this problem on the internet and based on what I read, I’ve observed the following and have taken the following measures, all unfortunately unsuccessful: :

1. Other computers at the same time ARE able to browse
2. It doesn’t matter what browser I use (Chrome, Firefox, IE)
3. It doesn’t matter what network connection I use (connecting to a second wireless network with a different router offers no change)
4. It doesn’t matter whether or not I disable Kasperksy antivirus or Zone Alarm. Mind you, there are reports on the net of Zone Alarm being the cause of such a problem BUT in my case, ZA was unequivocally installed AFTER this problem started
5. When this happens, even doing a 192.168.1.1 to connect to the router doesn’t work
6. I’ve tried doing a winsock reset by opening a command prompt, netsh int ip reset log.txt <enter>, netsh w r
7. I’ve tried flushing the DNS cache by typing ipconfig /flushdns. Initially I got an error message, so I then went into services.msc and set the DNS client to automatic, then start. Now when I type ipconfig /flushdns I do NOT get an error message (it says “successfully flushed the DNS Resolver Cache”) but it doesn’t restore browser connectivity
8. I went to the registry: HKEY_LOCAL_M ACHINE\SYSTEM \CurrentControlSet\Services \ DNS cache \Parameters ……… Build a new DWORD value called NegativeCacheTime and give it a value of 0
9. I downloaded WinsockXPFix and ran it.
10. I’ve ran a full screen with Kasperksy
11. I’ve ran a full screen with Malwarebytes’ Antimalware
12. I’ve ran a screen with Hijackthis but don’t know what to make of the output.
13. I’ve ran a series of PINGS that I’ve seen requested here before after getting the addresses from ipconfig /all. These are pasted in the second message that follows this.

At this point I’m staring at the obvious reinstall Windows XP but would like to know if any of you smart guys can make any suggestions. I have a drive image going back to a few months and all my documents are backed up but it’s just so tedious to reinstall everything.

Thanks

[ptcadoc]

NOTE: When these pings were obtained, net connectivity was NORMAL. I can post the same when it goes down if you think that'll be helpful.

Ping Computer IP Address

Ping Pinging 192.168.0.102 with 32 bytes of data:

Reply from 192.168.0.102: bytes=32 time<1ms TTL=128
Reply from 192.168.0.102: bytes=32 time<1ms TTL=128
Reply from 192.168.0.102: bytes=32 time<1ms TTL=128
Reply from 192.168.0.102: bytes=32 time<1ms TTL=128

Ping statistics for 192.168.0.102:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms


Ping Default Gateway Address

Pinging 192.168.0.1 with 32 bytes of data:

Reply from 192.168.0.1: bytes=32 time=1ms TTL=64
Reply from 192.168.0.1: bytes=32 time<1ms TTL=64
Reply from 192.168.0.1: bytes=32 time<1ms TTL=64
Reply from 192.168.0.1: bytes=32 time<1ms TTL=64

Ping statistics for 192.168.0.1:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 1ms, Average = 0ms


Ping DNS Server

Pinging 202.70.150.10 with 32 bytes of data:

Reply from 202.70.150.10: bytes=32 time=46ms TTL=60
Reply from 202.70.150.10: bytes=32 time=40ms TTL=60
Reply from 202.70.150.10: bytes=32 time=41ms TTL=60
Request timed out.

Ping statistics for 202.70.150.10:
Packets: Sent = 4, Received = 3, Lost = 1 (25% loss),
Approximate round trip times in milli-seconds:
Minimum = 40ms, Maximum = 46ms, Average = 42ms

[wlad]

I've been having exactly the same problem on my Lenovo T60 running XP Pro.

After a long time trawling the web (slowly!), I think I've managed to 99% solve the problem

I've lost the link now, but one suggestion was to stop and disable the IPSec service. This has made my connection a lot more stable - I've been going all week without a reboot so far.

The only problem I now can see is this: I can browse the Internet at work, but when I get home, the browser will not connect to any websites, even though I can ping them. If I restart the browser (only tried Chrome so far) then it works fine. This is the same if I then come back into work the next day, I'll have to restart the browser again, but not if I want to browse sites on our intranet. Sounds like a DNS resolver issue to me. I can live with it how it is at the moment.

So disabling IPSec may be worth a try for you, good luck!

[Vikerz]

Have you both guys tried checking if your browser using proxy?

[hewee]

Check your firewall, network setting to see if modem or router have trusted rights.

You need this with cable etc where every so many days your ISP renews your IP address. If it can not renew the address because your firewall blocks it then after a set time you can not get online till you reboot. But a reboot just starts the same thing all over again as you know.