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Hello everyone. I have recently build a completely new PC, and im having trouble getting it to POST. The specs are:

  • MOBO: Asus ROG STRIX Z390-F
  • CPU: I7 6700K (Only momentarily) -  switching to I9-9900K in 2 weeks
  • PSU: AX860I
  • RAM: 2x Crucial DDR4 2400MHz 16GB (CT16G4DFD824A) for a total of 32G

When i turn on the PC, there's a little LED above the 24pin connector that says CPU and light red for ~half a second.

Afterwards there's a yellow LED that lights up next to "DRAM" and it stays like that for a couple of seconds.

A couple of seconds later the entire PC shuts down and resets.

Now a loop has begun, and these steps 3 steps repeats themself again and again.

 

-I've tried switching around the RAM to different slots, both mono and dual.

-I've tried completely removing the RAM. That resulted in the PC running for ~20 seconds but still without POST.

 

I don't have any other DDR4 RAM available to test with. But the RAM come from another build, where they worked fine.

 

Does anyone know any troubleshooting for this? I'm out of ideas, and so far lost all sanity from spending around 4K on a PC i cant even enter BIOS on :/

 

btw the upper yellow led in the video is the MemOK! turned on

The middle yellow is the DRAM

bottom red is the CPU

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21 minutes ago, Drozee said:
  • MOBO: Asus ROG STRIX Z390-F
  • CPU: I7 6700K (Only momentarily) -  switching to I9-9900K in 2 weeks

The 6700K and 9900K use the same socket (LGA 1151) but they work with different chipsets. The 6700K is not compatiable with a Z390 chipset motherboard. 

CPU: Intel Core i7-950 Motherboard: Gigabyte GA-X58A-UD3R CPU Cooler: NZXT HAVIK 140 RAM: Corsair Dominator DDR3-1600 (1x2GB), Crucial DDR3-1600 (2x4GB), Crucial Ballistix Sport DDR3-1600 (1x4GB) GPU: ASUS GeForce GTX 770 DirectCU II 2GB SSD: Samsung 860 EVO 2.5" 1TB HDDs: WD Green 3.5" 1TB, WD Blue 3.5" 1TB PSU: Corsair AX860i & CableMod ModFlex Cables Case: Fractal Design Meshify C TG (White) Fans: 2x Dynamic X2 GP-12 Monitors: LG 24GL600F, Samsung S24D390 Keyboard: Logitech G710+ Mouse: Logitech G502 Proteus Spectrum Mouse Pad: Steelseries QcK Audio: Bose SoundSport In-Ear Headphones

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17 minutes ago, Drozee said:

I thought it would still work because its a 1151 socket

Intel really should have done something about that, like make a physical notch to make it impossible to put those CPUs in. 

I WILL find your ITX build thread, and I WILL recommend the SIlverstone Sugo SG13B

 

Primary PC:

i7 8086k - EVGA Z370 Classified K - G.Skill Trident Z RGB - WD SN750 - Jedi Order Titan Xp - Hyper 212 Black (with RGB Riing flair) - EVGA G3 650W - dual booting Windows 11 and Fedora Linux - Black and green theme, Razer brainwashed me.

Draws 400 watts under max load, for reference.

 

PSU tier list

How many watts do I need?

PSU misconceptions, protections explainedgroup reg is bad

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2 minutes ago, fasauceome said:

Intel really should have done something about that, like make a physical notch to make it impossible to put those CPUs in. 

I think people should just do a little bit of research before buying a product. 

CPU: Intel Core i7-950 Motherboard: Gigabyte GA-X58A-UD3R CPU Cooler: NZXT HAVIK 140 RAM: Corsair Dominator DDR3-1600 (1x2GB), Crucial DDR3-1600 (2x4GB), Crucial Ballistix Sport DDR3-1600 (1x4GB) GPU: ASUS GeForce GTX 770 DirectCU II 2GB SSD: Samsung 860 EVO 2.5" 1TB HDDs: WD Green 3.5" 1TB, WD Blue 3.5" 1TB PSU: Corsair AX860i & CableMod ModFlex Cables Case: Fractal Design Meshify C TG (White) Fans: 2x Dynamic X2 GP-12 Monitors: LG 24GL600F, Samsung S24D390 Keyboard: Logitech G710+ Mouse: Logitech G502 Proteus Spectrum Mouse Pad: Steelseries QcK Audio: Bose SoundSport In-Ear Headphones

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2 minutes ago, r2724r16 said:

I think people should just do a little bit of research before buying a product. 

"a little bit of research" results in people seeing that the motherboard is LGA 1151, and think it's compatible. Intel is responsible for making their products consumer friendly, even though people should be knowledgeable about their own belongings.

I WILL find your ITX build thread, and I WILL recommend the SIlverstone Sugo SG13B

 

Primary PC:

i7 8086k - EVGA Z370 Classified K - G.Skill Trident Z RGB - WD SN750 - Jedi Order Titan Xp - Hyper 212 Black (with RGB Riing flair) - EVGA G3 650W - dual booting Windows 11 and Fedora Linux - Black and green theme, Razer brainwashed me.

Draws 400 watts under max load, for reference.

 

PSU tier list

How many watts do I need?

PSU misconceptions, protections explainedgroup reg is bad

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I put all the parts in pcpartpicker.com (with the 9900k) and i didnt get any problems . I just had a 6700k laying around, and it had the same socket so i just expected it to fit. So it's not that big of a deal. And i genuinely feel like i've done a fair amount of research, considering its my first "fresh" build.

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30 minutes ago, Drozee said:

I put all the parts in pcpartpicker.com (with the 9900k) and i didnt get any problems . I just had a 6700k laying around, and it had the same socket so i just expected it to fit. So it's not that big of a deal. And i genuinely feel like i've done a fair amount of research, considering its my first "fresh" build.

There are plenty of people that post with questions about getting an i7 7700k or something and saving up for an 8700k, so you're far from the first.

I WILL find your ITX build thread, and I WILL recommend the SIlverstone Sugo SG13B

 

Primary PC:

i7 8086k - EVGA Z370 Classified K - G.Skill Trident Z RGB - WD SN750 - Jedi Order Titan Xp - Hyper 212 Black (with RGB Riing flair) - EVGA G3 650W - dual booting Windows 11 and Fedora Linux - Black and green theme, Razer brainwashed me.

Draws 400 watts under max load, for reference.

 

PSU tier list

How many watts do I need?

PSU misconceptions, protections explainedgroup reg is bad

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Well, I hope you didn't damage the socket / motherboard by putting the i7-6700K into there.

You should be okay, but doesn't hurt to double check it physically...

AMD Ryzen 9000 Rig

  • AMD R7 9800X3D + Alphacool CORE 1 w/ Performance Mount Kit + Thermal Grizzly AM5 Contact Frame
  • Gigabyte X870E Aorus Pro Ice
  • 32GB (16GB X2) G.Skill Trident Z5 Neo RGB DDR5-6400
  • Sapphire NITRO+ 6800 XT Special Edition + EKwb Full Cover Block
  • Custom Loop w/ 2x 360mm Radiators
  • WD SN850X + WD SN750 + Samsung 980
  • EVGA P2 850W + Red/White CableMod Cables
  • Lian-Li O11 Dynamic EVO XL

AMD Ryzen 5000 Rig

  • AMD R7-5800X
  • Gigabyte B550 Aorus Pro AC
  • 32GB (16GB X 2) Crucial Ballistix RGB DDR4-3600
  • Gigabyte Vision RTX 3060 Ti OC
  • EKwb D-RGB 360mm AIO
  • Intel 660p NVMe 1TB + Crucial MX500 1TB + WD Black 1TB HDD
  • EVGA P2 850W + White CableMod cables
  • Lian-Li LanCool II Mesh - White

Intel i7-8086K / Z390 Rig (Decommissioned Q2' 2025)

Intel i7-6800K / X99 Rig (Officially Decommissioned, Dead CPU returned to Intel)
Intel i5-4690K / Z97 Rig (Decommissioned)

AMD FX-8350 / 990FX Rig (Decommissioned)

AMD Phenom II X6 1090T / 890FX Rig (Decommissioned)

 

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<> Electronics Engineering Technician for the Canadian Department of National Defence <>

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33 minutes ago, Drozee said:

I put all the parts in pcpartpicker.com (with the 9900k) and i didnt get any problems . I just had a 6700k laying around, and it had the same socket so i just expected it to fit. So it's not that big of a deal. And i genuinely feel like i've done a fair amount of research, considering its my first "fresh" build.

You enjoy that rig when you get the CPU,,, Your set for may years with that rig, just do video card upgrades and sh*T,,,, Also OC the 9900k to 5Ghz...…. So you can join the 5Ghz club and what not.

Asus Sabertooth x79 / 4930k @ 4500 @ 1.408v / Gigabyte WF 2080 RTX / Corsair VG 64GB @ 1866 & AX1600i & H115i Pro @ 2x Noctua NF-A14 / Carbide 330r Blackout

Scarlett 2i2 Audio Interface / KRK Rokits 10" / Sennheiser HD 650 / Logitech G Pro Wireless Mouse & G915 Linear & G935 & C920 / SL 88 Grand / Cakewalk / NF-A14 Int P12 Ex
AOC 40" 4k Curved / LG 55" OLED C9 120hz / LaCie Porsche Design 2TB & 500GB / Samsung 950 Pro 500GB / 850 Pro 500GB / Crucial m4 500GB / Asus M.2 Card

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