power on: check.... then system dies while booting, or cpu fan goes JET ENGINE

JakeAlmighty

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Nov 28, 2014
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Hey all, I'm in need of some trouble shooting help.

Just took my fully functioning system, transplanted it into a brand new big case (Corsair 780t) with a new PSU (Antec HCP 1000w) and I'm no longer able to boot all the way into Windows.

a) if I have my SSD plugged in to boot from, the system dies partway through Windows boot up (not shown in video, but can be seen on the monitor I have attached) Video can be seen here.

[video="https://www.youtube.com/watch?v=s8D9yz0K6CM&feature=youtu.be"][/video]


b) If I leave the SSD unplugged (so not planning on booting all the way into Windows), it instead stays on and the cpu fan takes off like a jet engine after a bit. The video ends where I panic and shut down.

[video="https://www.youtube.com/watch?v=UJjHWb-elyY&feature=youtu.be"][/video]


1 spot where I had trouble in the migration - in the old case, the backplate for the cpu heatsink was mounted directly onto the case chassis with 4 screws behind the motherboard. In the new case this was impossible, because it is much larger and has a cut out there rather than the back wall. (and a big gap for cable management) I mounted it freestanding by holding it in place against the ear of the motherboard and screwing the heatsink into it from the front. (pics attached)

a) backplate off, looking on in trepidation

http://postimg.org/image/6xkl4rbz9/

b) backplate on, heatsink is attached on the front side

http://postimg.org/image/7yuvcx1mb/

c) front pic, heatsink/fan attached

http://postimg.org/image/ym6xlmfpd/

is this the root of my problems? I should note, doing this necessitated removing the heatsink at one point and I didn't have thermal paste on hand to do a fresh application.

I'm not an expert, so I'm not able to tell if the cpu is overheating (from me messing it up, say) or if the board is shorting out, or what have you. Help!


Any help diagnosing the problem and fixing it greatly appreciated! I just want to get up and running again :/ I can provide additional info/pics/video at request.


sincerely, a helpless n00b

edit: pic links fixed... embed wouldn't work dunno why, oh well
 
Solution
Step 2. (You may have already done this) Minimal boot. Take out everything that is not needed from the motherboard (more than minimum memory, GPU(s), WiFi card, disconnect any) drives other than boot disk. Try again. If that fails.

Step 3. Breadboard. Take the whole thing out of the case and put it on a soft surface and try a minimal boot there.

What is your full configuration?

JakeAlmighty

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Nov 28, 2014
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I did end up having to remove the cooler briefly, and I didn't have any new paste on hand as I hadn't planned on needing to do so.

so even just that brief air exposure ruins the paste to the point that the cpu can't transfer heat off and is overheating? (i'm assuming then shuts down to protect itself) Interesting that it doesn't protect itself if I'm not trying to boot right into Windows?

and thanks, either way I'll pick up some new paste asap and do a proper reapply
 
Not necessarily. I'm going through a checklist of possibilities. Booting into Windows is more stressful than booting into the BIOS. It uses more resources.

I'm not saying this IS the problem, but I'd like to eliminate that to start with. How old was the paste before you took the cooler off?
 

JakeAlmighty

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Nov 28, 2014
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ok I ran out and got a tube of Arctic Silver 5, just did a fresh application of it. (removed old dried up paste with 99% isopropyl alcohol)

Tried to boot into Windows (so SSD connected), no change. It dies in the same spot as before. Haven't tried cpu fan jet engine mode as that part makes me nervous!

what's the next step?

 
Step 2. (You may have already done this) Minimal boot. Take out everything that is not needed from the motherboard (more than minimum memory, GPU(s), WiFi card, disconnect any) drives other than boot disk. Try again. If that fails.

Step 3. Breadboard. Take the whole thing out of the case and put it on a soft surface and try a minimal boot there.

What is your full configuration?
 
Solution

JakeAlmighty

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Nov 28, 2014
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Well I pulled everything out as you suggested, and it booted. When I put it back into the case, the problem seems to be fixed and it now boots fine!

so thank you! I'm not sure what minute detail is different this time but it works! :) Finished up hiding cables and it's running smoothly now.