|It could be something driver related. Try reinstalling the drivers for the networking card.|
Also it could mean that your Hardrive's life is almost over, while this is unlikely in new computers. you should check to be sure. Try and lookup the SMART status of the harddrive by using SMART viewer which is located on Hirens Bootdisc
You can get the bootdisc by doing a little search on the internet.
Hope it helps,