PC Won't Boot CPU/MOTHERBOARD/RAM/CASE Problem?

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Jian__

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Dec 2, 2015
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Problem: PC Won't Boot

Whenever I plug in the 20/24 ping connector from my PSU(CX 430) into my motherboard(GA-B150M-D3H-DDR3), the case fan/led, cpu fan, hdd drive, disk drive, and PSU fan would turn on just a a blink of a second ? I know it isn't a PSU problem because I took my PSU and used it on another computer and it worked fine. Would this be a motherboard problem? I already ordered another motherboard(same one)
 
Solution
Chicano
1. I've had a motherboard fail exactly like that.
2. I've read and answered other cases where the same symptoms were caused by a dead motherboard
3. Similar issues can also indicate a dead PSU but you have ruled a PSU issue.
4. You mentioned having tested the PSU and left the mobo as the last possible cause... so I assumed you had discarded the RAM... I imagine you bought the RAM at the same time you bought the mobo and being a 1151 socket, it's relatively new and so is the RAM, RAM is a good brand, and all modules don't die at the same time (one dead module would't prevent PC startup).. so it's unlikely to be the cause.. You can check each RAM module at a time on the #1 socket just to be 100% certain it's not it. You'll see I'm right...
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Chicano

Chicano

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Aug 29, 2011
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1. Yes, that's a symptom of a failed motherboard...
2. A failed BIOS may also cause such a symptom but your mobo probably has the dual BIOS(?) which should be repaired automatically, so that may be ruled out.
3. Other times corrupted BIOS settings can also cause such a symptom and even resemble a faulty PSU. So, just to rule out BIOS corrupted settings... Try a reset following the suggestions in the wikihow article... if not successful the motherboard is probably dead.

http://imgur.com/a/og4cJ

 
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J

Jian__

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Do you think my PSU fan could've "fried" or "smoked" parts of the motherboard since I was extremely dumb and placed the PSU upside down with the fan of the PSU facing the motherboard....?
 
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Chicano

Chicano

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Aug 29, 2011
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1. You don't necessarily have to tweak the BIOS for settings to get corrupted.. the moment you attach any hardware device, new automatic settings are created, and those settings also fit in the user settings cathegory.
2. Right... the BIOS Cmos is a chip on the motherboard, and has a program that manages the installed hardware and can work automatically or can be configured manually.
3. The PSU fan cools the PSU components so if you place the fan backwards so it pushes air from the back on the computer into the PSU, it may not cause a problem... at least not rightaway as it would still cool the PSU.. and if it stopped working it would first damage the PSU, I don't see it so likely to damage the motherboard if you correct the fan orientation soon... in the long run it may be a different story.
And if you mean the PSU itself; It only fits one way (you can't install it the wrong way) so I don't see how you could have installed it upside down.
 
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Jian__

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Aight ty but another question how are you sure/most likely think it's a motherboard problem rather than RAM or CPU perhaps? and what does "Whenever I plug in the 20/24 ping connector from my PSU(CX 430) into my motherboard(GA-B150M-D3H-DDR3), the case fan/led, cpu fan, hdd drive, disk drive, and PSU fan would turn on just a a blink of a second ?" this have to do with the motherboard.. :D just need some clarificatoin(already have some thoughts)
 
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Chicano

Chicano

Judicious
Aug 29, 2011
5,071
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35,490
1. I've had a motherboard fail exactly like that.
2. I've read and answered other cases where the same symptoms were caused by a dead motherboard
3. Similar issues can also indicate a dead PSU but you have ruled a PSU issue.
4. You mentioned having tested the PSU and left the mobo as the last possible cause... so I assumed you had discarded the RAM... I imagine you bought the RAM at the same time you bought the mobo and being a 1151 socket, it's relatively new and so is the RAM, RAM is a good brand, and all modules don't die at the same time (one dead module would't prevent PC startup).. so it's unlikely to be the cause.. You can check each RAM module at a time on the #1 socket just to be 100% certain it's not it. You'll see I'm right.
5. If the BIOS doesn't post, you don't hear it beeping, don't get video, fans run slowly, momentarily or not at all; it's either the PSU, the BIOS or the motherboard.

As to which part of the motherboard(?).. The only part for sure that I know of is the BIOS.. the rest is to complicated to make wild guesses. You can check it for burnt spots, blown, bluged or leaking capacitors, but that's about all you can check visually. You could buy an inexpensive Post Card to see if it puts out any codes, and with that info you can search the web for more accurate answers
https://www.google.com.mx/#q=motherboard+post+card
 
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