Weak Internet Signal

We have cable internet service and at one time the internet service wouldn't stay connected. It kept disconnecting (right in the middle of my work which was driving me nuts) The constant disconnections were because of a weak signal due to the cable splitters we had connected to all the TV's in the house. So my husband made an adjustment to make sure my computer wasn't splitting the signal with anything else. And that worked.

Until 3 days ago.

For the last three days, I have been disconnected from the internet more than I've been connected. We called the cable company and they said we had a bad modem. We went to Best Buy to buy a new modem. Nope... that's not it.

My husband "attempted" to work from home today, but found himself disconnected almost the entire afternoon.

So now we don't know what's causing the problem. Obviously I'm connected right now. So my husband is catching up from all the work he missed from being down this afternoon. I've got to go catch up too because I got so sick of it disconnecting me right in the middle of work, that I just stopped trying.

I hope we get it worked out soon. Our land phone line is connected through the computer, so when the internet goes down, so does our ability to receive or make calls on our house phone. (We have cell phones, so we're not desperate, but this is annoying to say the least)