Solved Computer randomly rbooting when pwrd on. no post. cpu/ram go

June 14, 2015 at 17:37:17
Specs: Win8.1, 3.4GHz i5
No video no post but I KNOW ram and cpu are good as well as vid card...all I did was swap cases so those were all left.in tact...any ideas? Thanks fellow geeks!!! All fans, cpu power and main board power all plugged in, video molex ugged in and fans spin up on video, cpu, and case....I'm stumped. Reseated cpu, ram and replied thermal paste. It damaging anything.....was VERY careful.

Faslane


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✔ Best Answer
June 15, 2015 at 06:43:35
My money is on a short. Possibly one off the powered ports on the case like USB or 1394. Pull the jumpers that connect the case ports to the mobo to check.


#1
June 14, 2015 at 18:41:05
If it has an add-on Graphics card, take it out, clean the edge connectors with a soft pencil eraser then pop it in and out a few times to clear any oxide off the socket before pressing it home. Edge connectors moving fractionally onto oxide is a common occurrence when working inside a computer. It can also happen with RAM, and SATA HD connections (power and signal).

Always pop back and let us know the outcome - thanks

message edited by Derek


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#2
June 14, 2015 at 18:47:11
But I didn't remove anything....so that weird its happen all of a sudden....I'll try and report back though. Thank you.


Lane


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#3
June 14, 2015 at 18:50:53
That's what I was trying to say, just the small amount of vibration working inside a computer can cause this. It is an almost imperceptible amount of movement onto oxide that has built up around the connection. You don't have to remove something for this to happen.

Always pop back and let us know the outcome - thanks


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Related Solutions

#4
June 14, 2015 at 19:06:26
OK cool!! I'll try it in am first thing and report back. Thanks k you

Lane


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#5
June 14, 2015 at 19:08:24
Err...um...there are a stack of other possibilities too, but you might be lucky.

Always pop back and let us know the outcome - thanks


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#6
June 14, 2015 at 19:10:18
"all I did was swap cases"

The logical assumption is that you did something incorrectly during the swap. Pretty tough for us to determine what. There was absolutely no need to remove the CPU. Hopefully you re-applied the thermal paste correctly (vertical line method).

http://www.arcticsilver.com/pdf/app...

Try basic troubleshooting - remove all cards, disconnect all drives, unplug all externals except for monitor & keyboard. Connect monitor to onboard video port (if available). Make sure both the 24-pin ATX plug & 4/8-pin ATX12V plug are connected to the board. Remove all RAM except for one stick. Double check that your front panel wiring is connected correctly to the board.


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#7
June 14, 2015 at 19:33:26
Yep. Going to try all that tomorrow. The above eraser method didn't change anything. :-(

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#8
June 15, 2015 at 06:43:35
✔ Best Answer
My money is on a short. Possibly one off the powered ports on the case like USB or 1394. Pull the jumpers that connect the case ports to the mobo to check.

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#9
June 16, 2015 at 18:08:50
I removed the heatsync because I wanted new thermal paste applied. Turns out it was a faulty power button on the new case. Thanks for all the help and suggestions but I did get it all fixed and its running like a champ :-)

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#10
June 16, 2015 at 18:10:17
yes it can be quite troublesome troubleshooting these things but it turned out to be a faulty power button on the case itself so I exchange the case and reinstalled everything and it booted up immediately so everything is resolved and I'm up and running and playing Battlefield 4 lol :-) thank you everyone for all your suggestions and help it means a lot thank you

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#11
June 16, 2015 at 18:11:51
yes I did all that and the reason I pulled the CPU was because I wanted to make sure there were any bent pins or anything which is a symptom of random reboots but there weren't it turned out it was a faulty power switch in the case itself and as soon as I replace the case and reinstall everything it boot it up like a champ but thank you for all your help I appreciate everything you guys have suggested

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#12
June 16, 2015 at 18:15:29
Good to hear and thanks for the feedback.

message edited by Derek


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#13
June 16, 2015 at 18:19:51
you are welcome and thank you for helping. Sometimes these cases from China or at all what they're cracked up to be even though they look pretty cool but I'm just glad it's up and running it's pretty cool case - it's got some pretty cool lights and fans and things like that and its a mid ATX which fits nicely on my desk :-)

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#14
June 16, 2015 at 18:27:33
the case is pretty cool it's got four lights up top that act as vents and then a blue LED fan in the back and then two slots where you can add more fans up top if you want but I already have plenty of cooling so I'll probably just leave it alone its giving me enough grief lol here's a picture of that I hope posts just fine.

https://www.dropbox.com/s/h4xtud9aw...


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#15
June 16, 2015 at 18:28:33
the case is pretty cool it's got four lights up top that act as vents and then a blue LED fan in the back and then two slots where you can add more fans upv top if you want but I already have plenty of cooling so I'll probably just leave it alone its giving me enough grief lol here's a picture of that I hope posts just fine. the fans are a deep red not orange but you can also make them blue or purple or yellow so it's kind of cool and fun to play around with and there's a button on the side where you can turn down the brightness or make them pulsate which is kind of a neat feature

https://www.dropbox.com/s/h4xtud9aw...


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#16
June 17, 2015 at 01:21:45
Faslane,

My tastes and desires in a case are completely different from
yours, but that does look awesomely cool.

I just want a completely plain, white, rectangular box that is also
completely silent. My case is supposed to be quiet, but it is
quieter when I take off the side than when the side panel is on.
Makes absolutely no sense to me.

-- Jeff, in Minneapolis


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#17
June 17, 2015 at 08:04:22
Jeff

Maybe with the side on it spreads the airflow so that the sound isn't concentrated out of the vents. Another possibility is that the case acts as a sounding board and amplifies the sound. Just guessing.

Always pop back and let us know the outcome - thanks


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#18
June 17, 2015 at 08:11:47
yeah that's cool it's all personal preference after all but mine is totally silent you can barely even hear that it's turned on even when gaming the lights up top are just that they're not fans. There's only one to fans in it the CPU fan and the rear case fan and you can't hear either one of them they are cooler masters with liquid ball bearings or some crap in them lol so you can't hear them at all. it does make sense that cases make more noise with the side panels on because it causes air flow to be forced out of the vents at a much higher rate than if the case side was totally off and it could breathe very well so that definitely makes sense but my case even with the side panels on doesn't make a sound. Probably because it's vented out the top through those for light areas.

message edited by Faslane


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