What The Flip Is Wrong With My Computer?

So yeah, when I'm connected to the internet, after a little while I can click on a link, the bar at the bottom says 'connecting', then I get an 404 page saying it cannot find the page. So I click on the connection status icon in the system tray, and as I look it over, it tells how many bytes are being sent, received, etc. These numbers have stalled, and I look down farther and see the status of Errors: .......the number just continuously counts up...I've had it get to 160 before yelling at my computer what it thought it was doing.

So, can anyone tell me what the flip these errors are? They happen 95% of the time I'm connected to the internet on my comp, and happen mostly in the mid-morning and late afternoon/early evening. In other words, THE ONLY TIME I'M ON THE INTERNET.

I can usually get away with about 5–8 errors (btw, I watch the status CONSTANTLY b/c I hate it, and it's going to stress me out and give me a heart attack) but once it gets over 10, they usually just start happening continuously and I can't freely surf the 'net. I just sit and watch them pile up.

On another side note, anytime I post I have to copy everything I've written, b/c I have lost many posts before while publishing.