False CPU Temp on new motherboard

[HyperBallistic]

My Brother and I just built a computer, but it goes to black screen and restarts whenever we're in a game that's very high-demand. We've tested the PSU, GPU, and RAM and none are defective. We've stressed tested the CPU and GPU and RAM and have had no issues...except one. Speedfan reports the CPU temp to be 128C at all times, Idle or 100%. The heatsink is aftermarket and thermal paste is well applied. So it must be a faulty cpu temp sensor. Could this be causing games to shut down?

just a little more info:
World of tanks runs great
Planetside 2 Runs great until you get close to a fight, then black screen and restart
Battlefield 4 Restarts right as the game would have finished loading and started displaying the level.


System:
Windows 7 Professional
Intel I5-4430 CPU 4x3.00GHz
4G Memory
MSI H87-G43 Motherboard
Nvidia GTX 650 Ti boost

 

[mouse24]

Is it only speed fan reporting that temp or is it every monitoring program? What about the bios? Are the idle temps the same in speed fan, bios and some other programs?

 

[HyperBallistic]

I'll check some other monitoring programs, i'll post it here in a few.

UPDATE:CoreTemp is reporting normal CPU temps, so that's not it.

We're still at a complete loss as to what's causing the crashes. We've been trying to figure this out for two days now. I'll gather up the system specs and post them in the first post.

 

[scout_03]

try this on sensor part and report temp result on idle and on load http://www.hwinfo.com/download.php

 

[JohnPMyers]

Nope nothing is wrong there. Speedfan is actually reading that temp sensor as -128C, with the highest temp it can display being 127C. This happens because Speedfan is trying to read temperature data from a sensor that doesn't exist. You should be able to click on it and remove it from displaying so you don't have to stare at it anymore. It's not a bug either, it's just that Speedfan is made to read as many possible sensors as it can, but always displays incorrectly when that sensor isn't actually there.

As far as the black screen, make sure all your drivers are up to date. They often fix bug issues with each new release that may be causing your crashes.

 

[HyperBallistic]

All drivers are up to date. We've tried stable and beta GPU drivers. With Beta drivers, battlefield 4 will run in windowed mode, but try to resize, change settings, or maximize and it'll restart.

 

[scout_03]

did you check for bug issue on the bf4 forum there is a 13 of november bug correction https://battlelog.battlefield.com/bf4/forum/threadview/2955065217944685108/

 

[HyperBallistic]

did you check for bug issue on the bf4 forum there is a 13 of november bug correction https://battlelog.battlefield.com/bf4/forum/threadview/2955065217944685108/

Well, it's not just bf4 that crashes. I just found out that it also crashes when I run the Windows experience index. I think it might be power supply related, even though it passed the test when I had it tested.

 

[scout_03]

name and model of if even if it test good maybe it is not able to stand under load .

 

[HyperBallistic]

So it turns out that the power supply I ordered isn't actually able to run at 600W even though it's advertised as such. It has a few other false advertised features as well. I'll be returning it for a full refund.

Edit: I don't know why I can't pick my own post as the solution, but this issue is solved.

 

[scout_03]

that the way forum is made to prevent cheathing .

 

[gamerk316]

Looks like a dead sensor; A signed 8-bit value ranges from -127 to +128, and sensors fail either off scale low, or off scale high. In this case, the sensor is dead and is reporting its max value. Not much you can do, except try and RMA the CPU.