+ 1 Votes Have you ever made sure that Wake-On-LAN is off? seanferd 3 years ago In your network card properties.Sorry to ask again, but between the new forum formatting and all of the responses which clearly do not address "turning on by itself", this is becoming a tl;dr exercise, unfortunately. (OK, even though I did try to re-read it all.)I ask because since this may involve you somehow creating induction when moving past the system, it is one place to stop a wake signal if it isn't in the power button assembly or the PSU itself.Still an awesome mystery, this. (BTW, the 256 color-style purple house was really cool. ) + 1 Votes Microwaves? bsharpe37 3 years ago Have you tried putting it in your microwave? If you haven't you should, Once it's all cooked good, you should go to Newegg.com and buy another PC. Either that or Re-install you OS and see what happens. Take it apart. Take every piece of your computer apart, then put it back together. Make sure everythign fits good. Make sure you have you RAM in the correct positions. Would it be possible to get an entire hardware list of your system and installed OS version. The BIG Question I didn't see anyone ask ( I may be wrong there were a few wall of text posts i skimmed), What Changed? Obviously it wasn't like this from day 1? New hardware - you mentioned you installed a USB hub, did it hagve a driver that faults when under powered by a board causing a short in a wire?Maybe just maybe if you have another computer around, change out that computer with this one for testing purposes. Does it Restart when you walk by it?If no then we can rule out a power supply issue, I think the gremlins would have given up by now also. OK, saying it doesn't restart after moving you 2nd machine into the same location of this machine does moving the faulting machine to another location solve the issue? Saying NO, it still has the same issue in another location, lets try changing some components. Take the faulty machine and throw it out your window ( Not really) get your good machine and thiis one change out each component one at a time. Start the system and Test.Yes this is a lot of run around work to find a solution but seeing that there is such an a large amount of replies it's time for some real troubleshooting. That right PCMechanic.com fix's all issues LOL JK. Change out you hardwarte with the unit in question with known good. If you have changed out every pice of hardware except the motherboard, then Try changint hat out too. Still having the same issue? after changing out the hardware? 100%Look in the case, is the board correctly grounded to it's case or did someone forget to put some spacers in it?All the wires from case plugged into mainboard in correct locations as per diagrammed when you got the board? Lets say it's all correctly grounded in the case, 100% of the hardware was changed out and even the HDD and OS were changed with all cables correctly connected. SO theres no External sensors built into you case such a IR ect? Lets say No there's nothing special about this desktop. So whats that leave us with? Well if its not a internal issues with the desktop lets move external.Cabling I know there were several people posting about it. So you moved your desktop and it still has the same issue. Well. Lets start Unplugging all the extra crap you have plugged in. Even that nifty surpe protector. Yes we are going to use the standard wall socket! "WHHAAA!" Thats right, plug 1 monitor in and the desktop into the wall. Nothing else. Plug just your monitor and PC in to eachother ( VGA I assume) - Do not plug you your Mouse Printer Portable Cellphoen charger or keybaaord into your computer at this point. Then Walk by it. Still rebooting? Ok so its not a mouse or keyboard issue, GREAT - Well i figured it wasn't but couldn't hurt to test. Also you were able to test if the system was getting under powered or Circuit overloading. So lets say it is still doing it, you have friends right? Well lets say you do, take the PC to their house with your monitor and keyboard and mouse. Thats right box it all up. Say you arrive at their house, Install your PC at their house, walk by it, does it still reboot? This will test is the wifi signal theory someone suggested was causing an issue. ( That is assume your friend doesn't live next door or near a super mall of wifi's)Lets say the issue still happens, you even hooked it up on his kitchen counter so that it's not touching the floor and is correctly grounded. You even left your gremlin at your house. Hum, at this point it';s looking fairly strange...So lets take another approach, take all your hardware out and out it in your other computer case, YES Change cases. We probably could have done this sooner but I didnt think of it till now. Luckily you can arrange these in any order you want. So we changed out the hardware into your other case and the issue still happens, well at this point we just ruled out the case, all the hardware all the software independently. SO Something much be conflicting with each other. Time to look into compatibility. Lets check each piece of hardware. You had mentioned you video card had some trouble seeting correctly. well lets swap it out and test with one that is approved.Do the same for each hardware.So you issue still persists. I believe you have gained super powers to restart your PC by walking in-front of it, a task I could only hope to achieve as my users forget to restart their computers before they call me. That or there's something wrong as I ran out of IF-Then statements. :) + 1 Votes One MORE thing to try out.... Peconet Tietokoneet 3 years ago Place the computer on its side and then restart it and then do a walk past it and see if reboots by itself. If it does not then something is loose.Other than that i will say your computer is asking for for your help the only way it knows how by rebooting to grab your attention.Very weird situation you have. I have not heard or seen this happen before, only beeps to say either the video card is not slotted in properly or missing memory. Take it apart completely and give everything a good clean including your processor and heatsink, i do this every six months with every one of my computers (five altogether). It takes me about four to five hours on each one then i do a test to find out if i missed anything out. Your issue is very weird, i would put it in the town museum for being the only computer with a ghost attacted to it. :)Hope you find out what is causing the issue. + 1 Votes overheat? nick_bear 3 years ago I believe your computer can overheat. Check Bios settings you'll find the answer there. + 1 Votes Earthing Problem meghal.shah 3 years ago check for the proper power connection in the Room. Have a proper Electrical + 1 Votes Power fluxuation influences AlaTech 3 years ago Computers are so much fun when they do something weird until it is absolutely irritating. I have read for the most part the conversation and find that some people don't read the previous posts :). I Thought many of the similar considerations and if indeed this machine is still acting consistently in this manner; there is one other thing I have not seen mentioned yet. I could indeed have missed this but what got me thinking of this possibility is that someone mentioned electric contacts like in stereos, we have such a stereo if plugged in it will mysteriously come on. This problem is dusty contacts in the (drum roll) POWER SWITCH. It may indeed that with all the reasonable solutions which I would have thought too; that the real culprit here is possibly the simple power switch at the front of your machine. Changing the way it lays may possibly shift the minuet weight of the switch to 'solve' the problem for now; and yet the problem may still exist tho dormant for now. Given what sounds like so minor rough treatment of the machine, there may be wear or dust inside the power switch that the slightly different motion is just enough to activate 'the ghost'. This is also evidenced by that while you are not walking by it works normally; maybe even have someone else walk by while YOU are sitting at the machine as you normally would; have them walk the 'offending' path. Possible solution: Replace the power switch. Let me know. I am eager to know the final solution. + 1 Votes Switch connections AlaTech 3 years ago It varies between vendors. Some of the switches if you look will have slide connectors on those, some unfortunately soldier them in thus you would need to trace those wires to the Motherboard connection and unplug at the motherboard. It should be a simple slide plug. Of course use a ground strap so that you do not fry any of the components. The reliability of these switches is very good, but they can of course get damaged. Your machine does not sound old enough for wear issues. I have some antiques that still work fine in that area. Which means in one of your moves you may have had excess pressure on one of the switches that may have given the circumstance for the current problem.Someone else may have to answer this part tho...The reset switch might not have to be connected for the machine to work, and then again might be in the POST check and may be required. If it allows no reset button that would mean you don't have the reset control. A minor inconvience by comparison. Either switch could still be the problem; but I think it will only be one. I would possibly take a picture of both switches and head to the local tech store that sells parts. The switches should not be expensive, they are for the most part simple relays with a spring release toggle built in. The Power Switch must be used...I am not to comfortable with 'hot wiring' the power switch as a bypass. It explains other things you described too; if the power cycles in mid POST then it can give some rather weird problems like the monitor issues you mentioned that is usually 'solved' by a clean problem free boot. If power fluxuates in operation it can have odd acting results too; that was a reason to suspect the power supply. + 0 Votes Well time for a new case... Peconet Tietokoneet 3 years ago It will certainly get rid of the Ghost in your computer for ever. :) + 0 Votes right to left misery/mystery jdeerobins 3 years ago Ever thought of putting the box against a wall so you can't walk past it from right to left? Might help you get a good nights sleep. + 0 Votes try a different location i_tiberius 3 years ago is there a different power outlet in your place? if not, pack it all up and take it to a friend's place and try there.