Question Is my power supply or mobo the issue? working computer delegated to second case no longer works

[JimKiler]

I have the following parts:

PCPartPicker Part List: https://pcpartpicker.com/list/3jTKBZ

• CPU: Intel Core i7-4790K 4 GHz Quad-Core Processor ($470.80 @ OutletPC)
• CPU Cooler: be quiet! Pure Rock Slim 35.14 CFM CPU Cooler ($28.00 @ Amazon)
• Motherboard: Asus Z97-AR ATX LGA1150 Motherboard
• Memory: G.Skill Sniper Gaming Series 16 GB (2 x 8 GB) DDR3-1866 Memory ($97.99 @ Amazon)
• Memory: G.Skill Sniper Gaming Series 16 GB (2 x 8 GB) DDR3-1866 Memory ($97.99 @ Amazon)
• Video Card: MSI Radeon R9 270 2 GB TWIN FROZR Video Card
• Case: Antec Three Hundred Two ATX Mid Tower Case ($89.99 @ Amazon)
• Power Supply: Corsair Builder 400 W 80+ Certified ATX Power Supply
• Optical Drive: Asus BW-12B1ST/BLK/G/AS Blu-Ray/DVD/CD Writer ($109.88 @ OutletPC)
• Case Fan: Cooler Master SickleFlow (Red) 69.69 CFM 120 mm Fan ($9.39 @ OutletPC)
• Case Fan: Cooler Master SickleFlow (Blue) 69 CFM 120 mm Fan ($9.39 @ OutletPC)

I recently upgraded my main PC to Ryzen 3800X and the above is now my secondary rig. My secondary PC previously had an Althon X4 on AM2 mobo and worked with the above power supply and an entry level GPU. Now that i put this secondary PC together it turns on and the boot up LED's are fine but i get reboots constantly. If I touch the case it reboots. If I put in a USB drive it reboots, if I touch the Cat6 cable it reboots. I disconnected the GPU and all the case fans and still it reboots. Funny enough even though win10 went from AMD to Intel the OS still boots.

Any suggestions or is it time to buy a new PSU? if everything is unplugged the PSU should work right? Being my secondary PC the PSU never got a lot of use despite being old i would not consider this PSU older than 3 years. I would try using my main PC PSU but if I am going to go thru the hassle i will just buy a new one.

In other words i swapped out the Mobo, CPU, and RAM to make the above build and now it does not stay on without rebooting. This mobo, CPU, and RAM worked in my other build just fine. Did i short circuit the mobo or is my PSU underpowered for this build?

 

[Markfw]

OK, just to be clear, is the 4790k/mobo a problem ? or the 3800s on some mobo the problem ?

 

[JimKiler]

OK, just to be clear, is the 4790k/mobo a problem ? or the 3800s on some mobo the problem ?

The 4790K and Z97 are the issue. The Ryzen 3800X runs great. I think either the PSU is no longer good or the Z97-AR somehow got taken out by static electricity.

I will update my original post.

 

[Markfw]

So the power supply thats on the 4790k now is Corsair Builder 400 W 80+ Certified ATX Power Supply ? And it was on it all the time ?

 

[JimKiler]

So the power supply thats on the 4790k now is Corsair Builder 400 W 80+ Certified ATX Power Supply ? And it was on it all the time ?

That is the power supply but since it has always been in my secondary PC it is still very new even though it is > 10 years old

 

[Markfw]

That is the power supply but since it has always been in my secondary PC it is still very new even though it is > 10 years old

.The problem acts like motherboard or PSU. Why don't you switch out the PSU on the 3800x for a bit, and see if that fixes it. If not, its the motherboard, but I would not replace that, I would get a new Ryzen motherboard and some CPU.

 

[JimKiler]

.The problem acts like motherboard or PSU. Why don't you switch out the PSU on the 3800x for a bit, and see if that fixes it. If not, its the motherboard, but I would not replace that, I would get a new Ryzen motherboard and some CPU.

Thanks, but i don't want to risk an issue with my 3800x so i will buy a new PSU at micro center and return it if my problem persists.

 

[VirtualLarry]

it has always been in my secondary PC it is still very new even though it is > 10 years old

I don't think that it really works that way. Caps dry and age, whether they're in a circuit or not.

 

[JimKiler]

I don't think that it really works that way. Caps dry and age, whether they're in a circuit or not.

I was wondering that.

 

[JimKiler]

.The problem acts like motherboard or PSU. Why don't you switch out the PSU on the 3800x for a bit, and see if that fixes it. If not, its the motherboard, but I would not replace that, I would get a new Ryzen motherboard and some CPU.

I see Z97 motherboards are expensive $100 for refurbished or $200 or more new. I would hate to get rid of this CPU but i would hawk on eBay for $150-200 and definitely buy another Ryzen system if it is my Z97 mobo that died.

 

[VirtualLarry]

If you're in CONUS, I have a spare BNIB MSI PC Mate Z97 ATX board, if you need it. PM me.

 

[BoomerD]

Any possibility of a motherboard grounding issue? Perhaps a standoff touching a trace?

try assembling the components out of the case on a piece of cardboard.

 

[JimKiler]

Any possibility of a motherboard grounding issue? Perhaps a standoff touching a trace?

try assembling the components out of the case on a piece of cardboard.

That is a good idea, i was thinking of just taking it out and putting it back in. However yesterday i did get an EVGA 600watt PSU and initially i thought i had success as touching the case would not cause a reboot. However if I move the case enough while the PC is on it will reboot. So i stopped doing that and instead reinstalled windows which went fine. I ran a couple of stress tests OCCT and CPU-Z and both of these CPU stress tests will cause my system reboot or lock up.

I have short circuited components twice in my lifetime, both times i saw the spark of static electricity jump from my screwdriver to the component. I never had that this time and it was working just fine before i pulled this mobo/CPU/RAM out of my main rig.

 

[fralexandr]

Don't think this is the problem, but did you make sure to disable the haswell only low power cpu state c7 in bios? If the psu is 10+ years old, it probably doesn't support it.

 

[JimKiler]

Don't think this is the problem, but did you make sure to disable the haswell only low power cpu state c7 in bios? If the psu is 10+ years old, it probably doesn't support it.

I did not but I am assuming this PSU i swapped in yesterday would negate that option. I did reset the BIOS defaults initially so i am not sure what that setting is anymore.

https://www.bestbuy.com/site/evga-600w-atx-12v-eps-12v-80-plus-power-supply-black/8511029.p?skuId=8511029

 

[JimKiler]

Any possibility of a motherboard grounding issue? Perhaps a standoff touching a trace?

try assembling the components out of the case on a piece of cardboard.

You were right and i was stupid. When i took the old AM2 socket mobo out i left the motherboard mounts and it was a micro ATX board so the mounts were shorting the motherboard. I ran 3 stress tests without any failures. Thank you everyone for the replies!

 

[UsandThem]

Lucky you didn't fry your motherboard.

You should buy a lottery ticket tomorrow.

 

[BoomerD]

You were right and i was stupid. When i look the old AM2 socket mobo out i left the motherboard mounts and it was a micro ATX board so the mounts were shorting the motherboard. I ran 3 stress tests without any failures. Thank you everyone for the replies!

Glad you found the problem with no damage to components.

 

[VirtualLarry]

Yeah, you are lucky that you didn't fry the board. I did that once to a friend's board, after a standoff "went AWOL" in the case, after I removed the board to upgrade the CPU/cooler. I was negligent, and put the PC back together again, without tracking down where that standoff went. Thankfully, I had prepared for mishaps, by buying a "backup board" for my friend that was compatible (same mfg / chipset / socket), which I swapped in. Problem both created and solved.

Edit: Oh yeah, guess you won't be needing my Z97 board.

 

[JimKiler]

Yeah, you are lucky that you didn't fry the board. I did that once to a friend's board, after a standoff "went AWOL" in the case, after I removed the board to upgrade the CPU/cooler. I was negligent, and put the PC back together again, without tracking down where that standoff went. Thankfully, I had prepared for mishaps, by buying a "backup board" for my friend that was compatible (same mfg / chipset / socket), which I swapped in. Problem both created and solved.

Edit: Oh yeah, guess you won't be needing my Z97 board.

Ouch, i am lucky based on your experience. Correct no need for your board.