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broadband connection drop after awhile i started windows

i am having problem with my broadband connection.. whenever i start my windows from my notebook which is connected to my office broadband line, after awhile my connection will slow down and eventually the line will drop.. then when i restart, my connection will back to the normal speed and after sometime the line will slows down again..
i don't have problem with other broadband connection... just when i'm hooked to my office adsl line i will face that... could it be some bug or virus in the system that's preventing access to the internet?  
1 Solution
Sounds suspiciously like packet loss.  This sometimes happens with a ADSL Router (especially if you are using PPPoE).  Your system is probably set for an MTU size of 1500, whereas it might need to be set to 1492.  

Try this one first...

Change the Maximum Transmission Unit (MTU) Size


HOW TO: Change the PPPoE MTU Size in Windows XP


Also, ck this thread...

Gareth GudgerCommented:
It sounds like your modem is getting alot of CRC errors to the point it is dying. These errors being clean when the modem restarts. Try swapping out the modem. Most providers swap them out for free.
I think it would be a lot easier to analize the problem if you told us:

What type of Broadband connection you have (ADSL, SDSL, Cable, T-1, etc).
How many users on the network and what kind of equipment sits between your PC and the Broadband.
What is your OS,
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are you on a wireless network connection...you mentioned your notbook... if so you may have some week signal going on here.....
Do you have a file sharing program installed on the Laptop?
Emule, Kazaa, bearshare, grokster?

Maybe when you first start, the program is not connected to any users, then after a little while p2p users in que begain to download the files you have.  This is choking down your adsl connection, mostly because of shitty upload speeds.


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