External drive block internet

[komanche]

Hi guys! I'm new here and I have a little problem, I have a WD My Book Home drive and whenever I connect the drive to the computer my internet gets kind of "blocked"!?!? Can you please tell me or give me some pointers on what could cause this and how to fix it?

 

[MrLinux]

Any chance of a machine spec (including OS)?

 

[komanche]

Intel Dual core 2.0Ghz
1GB RAM
120GB internal Drive
Windows XP SP3

-What else could I tell you?