Lost Connection: Revised

OK.....I found out the issue of my problem. Mines was the
fact that I was sold a defective motherboard. No matter
how many NIC cards I bought, they all kept burning out,
then nothing appeared on my monitor, not even BIOS. So it
was at that point that I realized my board was shot.
Luckly it was still under warranty. So I took it back,
they replaced it with a new one and now everything works
fine.
Now I was also told other reasons this could be happening
before I found out it was my motherboard.
1. Sasser worm
2. Ethernet card
3. Spyware and adware
4. Something in the computer is dead. (Hardware)
Good luck to the rest of you with this issue.