Presumably wireless. Could try updating the driver for the wireless adapter.
If the computers are in different rooms it could be the channel -- the frequencies the channels represent vary in quality depending on environment. The Toshiba may also be closer to a source of interference -- cordless phone base and video sensder are frequent culprits (move them away from router or computer). As are neighbouring wifi -- choose a channel 5 stops from strongest neighbour.
I did download the driver, it still wasn't great but I wasn't losing it as it as much before. I moved the wireless router to another room, haven't had a problem since. So I am guess the line in the other room wasn't very good. I haven't had any problems now, and been few days. Thanks for your tip!see if you can identify which chipset the adpter uses --- see Device Manager. If Toshiba site unhelpful look for a generic driver for the chipset.