This is a sorta computer question, sorta electrical question: For the past 2 years, I have run a powerline adapter from my computer room to the main router without a hitch but on Thursday, I lost internet access completely after my computer had a kernal-power issue (event ID 41, task category 63) that has spontaneously shutdown the computer about once every day or so for the last couple of weeks (no blue screen of death, no warning--everything completely shuts down instantly.) I've researched a solution to that for weeks and have found no solution, short of reformatting, which many people have said is a band-aid as the problem resurfaces within days. But that's not what my question is about (although I'll take any help/advice on that issue if you've got it!) After farting around (i.e. wasting the whole day) on Thursday trying to re-establish the internet, I cried uncle and called the ISP and had a tech come out this morning. He was able to clean up the signal-to-noise ratio on the line but was unable to establish connectivity for me. He was as stumped as I was. After much moving of the modem around the house, including directly to my computer, we discovered that the powerline adapter was the fault. So he left and I was almost resigned to buying a new set of adapters. But since we have several around the house, I tried swapping them out to see if they truly were the problem. Every one of them that I plugged into the outlet that I've used would light up and "find" the network but be unable to connect to and/or hold that connection to the internet--almost like something was "blocking" the transmission. Then, I had an epiphany. I plugged the powerline adapter into a different outlet in the room. Didn't work. Then another. Didn't work. But the third one? That one connected instantly! (I feel like the swamp king in Monty Python and the Holy Grail: "It sank into the swamp. So I built a second one. That sank into the swamp. So I built a third. That burned down, fell over, then sank into the swamp. But the fourth one stayed up.") Anyway, crisis averted. But I can't figure out why three outlets in one room (2 on the same wall while the third is on an adjoining wall) would not work suddenly for the powerline to send/receive intenet but still have power to them for televisions, clocks, etc. Or why another outlet in the room (on an opposite wall) would be able to do it? I'm not an electrician by any means so I'm perplexed that this simple problem was the cause of pain and stress for the last 48 hours. How could this happen and is it fixable? Is this something a voltimeter would tell me? I don't own one so I couldn't do it on my own anyway. Well, thanks for reading this soliloquy of my internet issues for the last couple of days. If you can offer any advice/knowledge on this topic I'd be much appreciative.