What Does It Mean When Power Supply Powers Fans and Drive but Not Motherboard

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Aug 21, 2022
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  • #1
Every bit the title says: Mobo turns on and all lights / fans working but no outputs functioning (USB, aboard graphics, etc)

I've honorable tack my first computing device:
Intel i5 2400s LGA1155
Gigabyte GA-H77-D3H-MVP
Radeon RX 560
350 watt Corsair PSU
2 x 8gb DDR3 memory
1 Sata 7.5k 1tb HDD
240 gb SSD

I put together my first computer yesterday, transplanting the CPU, RAM and hard drives from my old computing device.

At initial I hadn't plugged in the ATX 12v CPU power corduroy and and then the computing machine would only spell happening for a second and then die.

Now that I've classified that out, the computer turns on and all fans in the case light astir and reel as well every bit the GPU fan, and I can hear the hard drives spinning, merely absolutely nothing else happens. My keyboard and mouse are non recognized, the DVI from both the GPU and aboard art both don't work, I.e no outputs are functioning at altogether but everything else seems fine as far as I derriere assure.

The mobo loudspeaker is functioning as I took out the ram and shod and got the beeps for that, but otherwise when I'm running everything there is no beeps at all sol nothings wrong as far as I can enjoin.

Could I have fried my mobo operating room CPU? Or could my PSU not be powerful enough so that power to the fans and lights works but everything else doesn't?

Interestingly I've noticed that although my phone doesn't show that information technology is charging when I plug it in, it does actually go upon battery percentage so I would read there is power acquiring direct to IT.

Any help oneself would live greatly appreciated!

Darkbreeze
Jun 24, 2014
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  • #4
Sol everything you have worked prior to putting them in that motherboard?

If the answer is yes, then I'd make a point you have connected the CPU fan to the CPU_FAN lintel. If it is, large, move on. If it is not, connect information technology and seek again.

If that was not the problem, past extract the cpu ice chest and processor back out, and check the motherboard to see if some of the pins in the Central processor socket were bent during initiation. This is a common cut for first clock builders, and I've even off occasionally seen experienced builders make the mistake of not properly installing the Central processor and bending pins. If no pins are bent, then I'd reach the motherboard seller and tell them that the unit is faulty.

If you did non remove the graphics card from the motherboard when you dependable to use the onboard graphics, then I'd remove the artwork card and reconnect your monitor lizard cable to the motherboard output and taste again.

Too, if your graphics card requires additive power, make predictable you had connected those cables as well.

Probably a good idea to check EVERYTHING here:

http://www.tomshardware.com/forum/261145-31-perform-steps-posting-office-charge-television-problems

Darkbreeze
Jun 24, 2014
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  • #2
Is this a new motherboard? Was the CPU seized tabu of the motherboard socket and then put back in?

Did you check some ends of the monitor cable system to make indisputable nothing is bent, Oregon try a different monitor lizard wire?

What was the reason for the swap of computer hardware to a new home?

Aug 21, 2022
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  • #3
The motherboard is sunrise merely non brand new. It was bought online and reset away the seller before I got it. I'm sure the monitor cable is working as IT works on everything else but I'll hear another one concisely. The reasonableness for the change was that I bought a new case and GPU and they didn't fit my old motherboard, then I bought a new mobo and PSU aswell and put everything on the late mobo.
Darkbreeze
Jun 24, 2014
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  • #4
So everything you have worked prior to putting them in this motherboard?

If the answer is yes, then I'd make a point you have on the CPU fan to the CPU_FAN heading. If it is, great, move on. If it is not, connect IT and try again.

If that was not the problem, then side the cpu cooler and cpu in reply out, and check the motherboard to reckon if any of the pins in the CPU socket were bent during installation. This is a common issue for first sentence builders, and I've even occasionally seen experienced builders make the error of non the right way installing the CPU and bending pins. If no pins are bent, then I'd contact the motherboard vender and differentiate them that the unit is faulty.

If you did not remove the graphics card from the motherboard when you tested to use the onboard nontextual matter, and so I'd take out the graphics identity card and reconnect your monitor cable system to the motherboard turnout and seek once more.

Also, if your graphics batting order requires supplemental mightiness, score sure you had joined those cables as well.

Probably a good idea to check up on EVERYTHING here:

http://web.tomshardware.com/meeting place/261145-31-perform-steps-posting-post-boot-video-problems

August 21, 2022
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  • #5
Thanks darkbreeze, there's a distribute of good suggestions there. I'm busy right straightaway merely I'll try those out when I get home.

I did plug a fan into the CPU_FAN hoopla but just one of the ones for the case, not an actual CPU fan thus I'll try that over again.

I'll also try unplugging the GPU and just victimisation onboard graphics for like a sho.

Also, there is definitely a possibility I've dead set the CPU pins. I also had no idea how much thermal spread to use so I could have gone overboard and got any onto the CPU. I'll have a better look at home tonight and try all your suggestions

Cheers mate

Darkbreeze
Jun 24, 2014
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  • #6
Doubtful energy spread would cause this kinda issue, instantly, unless you Rattling used a lot. Frankly, for almost all configurations, a blob about 1/4 the size of the part of a #2 pencil eraser that sticks out, operating theatre a rather fat grain of rice squirrel-sized amount of thermal material dead mall connected the top of the CPU should be plenty. Methods that show wiping thermic paste across the full Central processor lid, drawing off smiley faces or creating big X's along the CPU hat are rightful ludicrous.

Information technology does not take much of hot paste to fill the micro-pores betwixt the heatsink base and Mainframe lid, and that is all you are trying to do. The actual portion of the CPU lid area that needs to have got thermal paste in contact with it is actually quite little than the total CPU palpebra, and a very reduced amount will generally bedcover quite far anyhow as the tolerances are within thousands of an inch for out-of-apartment and micro porosity anyhow, usually.

Some cheap or gillyflower coolers might Be minutely more, but the theory lul applies.

Case fan isn't essential to POST operating theater boot, commonly only Central processing unit fan. Case fan is organic for cooling all the same, just it won't crusade this problem.

Check CPU socket for bent pins. Most likely job. If it's not that, we ass go from there.

Aug 21, 2022
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  • #7
That's a morsel worrying, I unquestionably put much to a higher degree a oleaginous grain of sand. I would say about the size of a nursing bottle cap in spread, and some of information technology got onto the circuitry merely I was quick and delicate to clean it off so I'm hoping it hasn't caused any issues. I'll update the wind again once I've tried your suggestions, thanks again.
Darkbreeze
Jun 24, 2014
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  • #8
Non food grain of sand. Granulate of cooked rice. A fat food grain of au gratin rice. Like, long Elmer Leopold Rice. Still far less than what well-nig people finish up applying. There ARE some thermal pastes that recommend applying a lot more than that, simply I think that is mostly thusly you'll use IT up and have to order more. None of the builders I know ever recommend using as a great deal or anyplace near what the thermal paste manufacturer recommends.
Darkbreeze
Jun 24, 2014
69,963
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  • #9
-Some methods "Recommended" around the net-

-The likely, but undesirable results of those methods-

I don't recommend whatever of those, and to clarify, I'm not claiming to be an authority or trying to indicate there is no other way but mine, only it is one that has worked on literally hundreds of builds over the years without issue. I in person prescribe to the cooked rice grain sized application when using any of the normally available pastes that come in a tube applicator equal the Arctic Silver 5 or most of the enclosed pastes that total with premium coolers.

I've never had unneeded paste squeeze from between the Central processor lid and heatsink using this method nor had an issue with understaffed temperature reduction overdue to some lack of sufficient TIM. You can make your have decisiveness on what works best for you. Conditional the cooler, a same small snow pea sized dab will work well too, soh elongate Eastern Samoa you don't get carried away or be amiss the definition of snow pea. For our purposes, perhaps a dab active 1/4 the sizing of the part that sticks out of the metal on a total 2 rubber eraser is a better description.

-More promising methods-


Nearly all initiate builder thinks more wish be better, until they con for themselves how wrong that mode of thinking truly is. The paste is only there to provide a thermal interface between the metal of the cpu lid and the floor of the heatsink. It's only job is to bridge any convex surgery acetabular tendencies of the palpebra or heatsink wrong and to fill microscopic pores in either surface.

Information technology's non there as a magic cooling pad and it's enjoyment would really be entirely excess were both surfaces to cost whole flat and not-leaky. Only since that is last, a thermal interface material is required.

Aug 21, 2022
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  • #10
Wow darkbreeze, thank you for the important information! A little library paste goes a longish way and now I know for totally rising builds to usage overmuch to a lesser degree I did!

Regarding my pc, I tried taking one component away and booting it and seeing if that made a difference, and then trying another component. I took the GPU knocked out and socialist everything else and it shoed. Turned outgoing it was a simple solution of changing the bios settings to use PCI nontextual matter rather than automatic configuration.

I'm not too sure why it would have caused a job, as it was previously just automatically using the onboard graphics and even with the DVI blocked into the mobo information technology wouldn't thrill at all.

However, IT was my first build and these are all swell things that I've learnt for the incoming one so I'll remember these and hopefully won't have issues next time!

Thanks again for all your help oneself and resources

Darkbreeze
Jun 24, 2014
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  • #11
That IS weird. For future tense reference, I've quite a few motherboards that if you move the display cable to the motherboard output just DO not remove the graphics card from the PCIe slot in the motherboard, IT volition not switch to the integrated graphics automatically. Maybe that was the issue. In any case, gladiolus you got it classified out and if you ever have more questions smel free to involve. Thanks.
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What Does It Mean When Power Supply Powers Fans and Drive but Not Motherboard

Source: https://forums.tomshardware.com/threads/motherboard-turns-on-and-all-lights-fans-working-but-not-outputs.3355180/

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