INTERNET SLOWS DOWN WHEN THIS LAPTOP CONNECTS TO THE NETWORK

[dotless]

Hi all.
I have a wireless network at home.
I have 2 desktop and 1 laptop.
both desktops are connected via wire and the laptop connects through wifi.

the problem is when this laptop connects through wifi, the internet slows down like crazy on all machines.
the laptop has nothing running and the moment when it's turned on, BOOM! it slows down. any remedies?

 

[PhilFrisbie]

Check the laptop for viruses or malware. That is a classic sign of an infected PC using all the outgoing bandwidth to send spam or infected emails to others.