New Internet problems -__-

You should have called your ISP from the get-go and asked for a line quality test straight from them. This makes deduction far easier, as it leaves your router and computer as the likeliest of problem candidates.

I'm assuming you checked all your wiring to make sure it's correct.

Can you unplug your ethernet from the router and connect straight to the modem and try to run the net from there? This will isolate the router as a potential problem.