PC SupportCPU over heating message
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PC SupportCPU over heating messagePosted:

noob2019
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Hey guys.
I needed to travel with my pc so i had it taken apart and put back together. i started it when i got home and immediately started getting problems. upon start up i see the normal asus load screen> then a message 'please press del or f2 to enter uefi bios setting' if i ignore this don't press anything i get a black screen with just the cursor showing, no log in page and am unable to see anything on ctl+alt+del... when i do press f2 it shows a 'cpu over temperature error!' message and in the 'uefi bios utility menu' it shows the cpu temperature at above 70 which scares the shit out of me.

I'm not very good with techy building stuff so if you need anymore info that can help you help me please ask in layman's terms.

when the case of the pc's open and running i noticed that all fans are spinning besides the fan on the graphics card (strix-gtx970-dc2oc-4gd5). i've read online that sometimes these don't spin unless they need to but it doesn't seem right to me so i thought i'd mention. I'm also thinking that the guy that rebuilt may not have used the right amount of thermal paste. also for some reason i'm unable to spam f5 and run it on safe mode..


Hope you can help. Thanks in advance
#2. Posted:
M9z
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Only reason that would happen immediately after a teardown and rebuild, is either, first off, they didn't apply thermal paste at all, in which case, umm... yea that guy needs to be fired, or second, i've run into issues before with some PC's where having no fan plugged into the CPU fan header can give warnings like this, it'll refuse to go past that point if the header designed for the CPU fan has no input.

Other than that, I'd take it back to the guy and have him double check and trouble shoot, since he's the one that did the work, the burden of repairing anything broken in the process falls on him to find and fix, or replace, at least in my state.
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OGTrey079
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Are you sure you reconnected the 2pin fan?
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M9z
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OGTrey079 wrote Are you sure you reconnected the 2pin fan?
What kind of CPU fan ships with 2 pins, by default they need 4 for full PWM capabilities so they can adjust speed depending on temps lol
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Sounds like the CPU fan has been plugged in to the wrong header, or a setting in the BIOS may have been changed.

We really need to know your specs to be able to help more. Also pictures of your system would help.


M9z wrote What kind of CPU fan ships with 2 pins, by default they need 4 for full PWM capabilities so they can adjust speed depending on temps lol

Molex. Technically, Molex has 4 pins but only 2 are used. Molex is old and absolute trash though, and the only fans you'll find now-a-days that use it are cheapo ones, like those Chinese RGB things you'll find on eBay for next to nothing.

3-pin fans are much more common, which are the same as 4-pin just without PWM control. Molex and 3-pin fans will only have voltage control. 4-pin and 3-pin fans are backward/forward compatible. However, a 3-pin on a 4-pin header will run full speed constantly. A 4-pin fan on a 3-pin header will run exactly the same as a 3-pin fan.
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M9z
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21 wrote Sounds like the CPU fan has been plugged in to the wrong header, or a setting in the BIOS may have been changed.

We really need to know your specs to be able to help more. Also pictures of your system would help.


M9z wrote What kind of CPU fan ships with 2 pins, by default they need 4 for full PWM capabilities so they can adjust speed depending on temps lol

Molex. Technically, Molex has 4 pins but only 2 are used. Molex is old and absolute trash though, and the only fans you'll find now-a-days that use it are cheapo ones, like those Chinese RGB things you'll find on eBay for next to nothing.

3-pin fans are much more common, which are the same as 4-pin just without PWM control. Molex and 3-pin fans will only have voltage control. 4-pin and 3-pin fans are backward/forward compatible. However, a 3-pin on a 4-pin header will run full speed constantly. A 4-pin fan on a 3-pin header will run exactly the same as a 3-pin fan.


I guess because I was thrown into this whole PC thing with 4-pin 12v fans, and 3-pin fans, and 3-pin 5v RGB headers all being kind of a standard, I completely forgot molex was even a thing lol
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