Weird wireless connectivity loss

[vibhor_agarwalin]

Hello Folks,

Found this issue as pretty weird & odd.

Connectivity via home wireless stops after 10-15 mins.
Peculiar stuff being the sites visited during this time frame continue to work there after.
New sub-pages which weren't visited earlier work as well. This rules out caching issues.
Any other site that wasn't using internet during the ~10 odd green period fail to open & say no connectivity.
Common to all browsers.

All works fine on switching to wired network.
Perhaps above negates presence of malware & other stuff.

Problem specific to one laptop.
That mentions wireless connectivity is good.

Has anyone ever heard of similar stuff?
Any insights on countering this?

[Geek-9pm]

What is the model and name of the problem computer?
How far is the laptop from the Wireless router?
Have you tried it in another room of the house?
Are there other strong Wireless signals near you?

A simple check is to have a low price USB wireless adapter. You will need to disable the laptop's  dater and install the new adapter.
Try Amazon:
This model works good and sells for about $10 plus shipping.

Panda 300Mbps Wireless N USB Adapter
Under average conditions it will work as good or better than the laptop's built in device. (The antenna gives it the edge.) 

[vibhor_agarwalin]

Thanks for the inputs.

Model is Toshiba Satellite (some ~7 year old series).
Needless to say had been working fine for all those 7 years

Have tried from various locations ranging from 1 feet (sitting adjacent to router) to different rooms.

There are numerous wireless signals but none stronger than mine.

Wondering if the problem is with inbuilt wireless card of laptop, won't all sites be down?
Thoughts on why the ones that were opened during the ~10 odd working period continue to work?

By laptop's dater you mean the laptop wireless card?

[Geek-9pm]

Yes,  the laptop's own card. I assumed it was not removable.
Try a low cost USB adapter. It will work  on laptops made in the past ten years.

[vibhor_agarwalin]

Ok, this might take few days before i have one in hand.

Below scenario still puzzles me if it's really problem with wireless card.
> Wondering if the problem is with inbuilt wireless card of laptop, won't all sites be down?
> Thoughts on why the ones that were opened during the ~10 odd working period continue to work?

[Geek-9pm]

Quick answer. It is hard to guess until you have something to compare.
While waiating, you can try another OS, just to see what happens. I mean a Live Linux CD, which does not have to install itself.
The Linux OS will use a different set of drivers for the wireless device. It just might give interesting results. I like Puppy Linux, but there are many in that category.

[patio]

I seriously doubt it's the OS...

[Geek-9pm]

I seriously doubt it's the OS...

Right!
It is a test of not only  the OS.
Linux will use a different set of things to interface to the Wireless device.  Now there just might be  small chance the device was not installed correctly under Windows . Linux will load in about 2 or 3 minuets and you will have a way to compare relative performance.

Live Linux does not alter the original installation, so it is a non-destructive test. Otherwise, doing the Windows Wireless install is time-consuming and can change things in a way that is hard to reverse.  A system restore in Windows can take twenty minuets.

And yes. there is the possibility that Linux can not even install the wireless device. But if one already has a Linux Live in his toolbox, it only takes a few minuets to give it a try.
This is about a Live Linux, not a full install.
Avoid the full install. Unless you like adventure.
BTW: Many 'Rescue CDs' are built from Live Linux.

[patio]

Whatever...

[vibhor_agarwalin]

Using a Live CD is a nice idea.
Had a couple in my closet long back (don't remember the name). Will get back soon.

Won't mind system restore as well if i find a recent snapshot.
Time not a worry

[vibhor_agarwalin]

Problem is getting trickier as I find more details.

Here's the latest update:
Issue is with combination of this particular laptop & my wifi router.

Reason:
Once down, no other devices can connect to internet with my network.
Only way to get the connectivity back is restart the router. No live CD or system restore works now.
However, it never goes down if i use other laptop or device.
Additionally even if it's down i can access internet via my neighbors wifi through the culprit laptop & that never gets bad.

Believe above confirms issue with this deadly combination.

Tips please, what to do now?

[Geek-9pm]

Ah.. The mystery deepens!

It would appear that your laptop has a "surprise software" that wants s to optimize the router and does a very bad job.
Go into control and and select remove software.
Look for anything that looks like it might be some kind of optimizer thing.  If it is not a program you  trust, remove it.
www.howtogeek.com/172839/10-types-of-system-tools-and-optimization-programs-you-dont-need-on-windows/?PageSpeed=noscript
10 Types of System Tools and Optimization Programs You Don’t Need on Windows

[vibhor_agarwalin]

Didn't find anything odd.
Haven't changed the setting for atleast 6 months or so.
Problem started just a week back.

[vibhor_agarwalin]

Today phone started the same symptoms.
Have changed the wireless router.
Let's see how this goes.

[Geek-9pm]

just to review... OP said:...

Model is Toshiba Satellite (some ~7 year old series).
Needless to say had been working fine for all those 7 years

...and he has XP.

OP says he is going to try another router. The OP has ignored my suggestion to first try another wireless adapter on the laptop as a way to prove the internal wireless is not the source of the problem.

Any wireless adapter is able to bringing ruin to a local network.

Network interface card
Network slowdowns often result from a bad network adapter on a PC. Bad adapters have been known to bring down an entire network.
When a network adapter goes bad, it may begin to broadcast junk packets (useless packets of data) onto the network. If this is broadcast traffic, any device in the same broadcast domain as the offending network interface card may experience problems, including slowdowns. I have experienced a “junk-spitting” NIC more than once. In the worst case, a PC with a bad network adapter was bringing down all student PCs in the buildings within a particular VLAN.

Common causes of network slowdowns - tech republic
See what I mean? It does happen.