Question New CPU installed, PC posting only half the time

[NickDerno]

My friend recently gave me his old CPU (Ryzen 7 3700x) but I've been having troubles with getting my PC to boot up consistently. When it does boot up, it works great and has no issues with performance or temps. It usually boots fine about three quarters of the time.

When it doesn't boot up properly, it doesn't post and the Q-LED error code on my Asus Crosshair VI reads either 8, 04, or 45. I have to either hold the power button to restart it, or turn it off from the power supply and try and boot it again. There seems to be no rhyme or reason as to why it doesn't post. Sometimes It'll boot 10 times in a row, other times it won't boot for a few times in a row. I have logged the times when it isn't posting but there is no pattern. I know it's a CPU issue since my old Ryzen 7 1700 worked completly fine when I reinstalled it, but I'd really like to get this CPU working since it's newer.

Does anyone have any idea what might be going on? I certainly don't anymore. I'd appreciate any help I can get. Here are my specs:

CPU: Ryzen 7 3700x
MOBO: Asus Crosshair VI Hero
GPU: Asus ROG strix 2070
RAM: G.Skill Trident Z 16GB 3200
PSU: Corsair RM650x

Thanks in advanced.

 

[Roland Of Gilead]

Hey ther,

It's very likely you need to update your current bios. What bios are you running? You can check this with CPU-z.

 

[NickDerno]

Hey ther,

It's very likely you need to update your current bios. What bios are you running? You can check this with CPU-z.

Thanks for replying. I'm running the up to date BIOS version 8702

 

[Roland Of Gilead]

Thanks for replying. I'm running the up to date BIOS version 8702

Did you clear CMOS after the bios update? If not, you need to that fist. THen test again.

 

[NickDerno]

Did you clear CMOS after the bios update? If not, you need to that fist. THen test again.

My motherboard has a clear CMOS button, which I used and it reset the settings but there was no success. I haven't phyiscally taken the battery out though to clear the CMOS but the button should do the same thing.

 

[Aggressive Combo]

Try reseating all of the cables on your motherboard. Maybe that'll fix it.

 

[NickDerno]

Try reseating all of the cables on your motherboard. Maybe that'll fix it.

Ok, I'll try that. I think it might be a software issue though because my other CPU works fine with the build

 

[ThomasKinsley]

A previous member had error code 8 on this motherboard and it turned out to be custom sleeved PSU cables that were the culprit. Do you happen to be using any of those?

[SOLVED] - ASUS ROG CROSSHAIR VI HERO QCode 8

This is my first post on this forum. But I'm stuck with my problem. I bought the ASUS CROSSHAIR VI HERO lately after my first Mainboard (MSI X370 KRAIT Gaming) broke. It’s running the Ryzen 5 1600 and 16GB of Corsair Vengeance LPX 3200MHz Cl16. My graphics card is the ASUS ROG STRIX RX580 08G...

forums.tomshardware.com

 

[NickDerno]

A previous member had error code 8 on this motherboard and it turned out to be custom sleeved PSU cables that were the culprit. Do you happen to be using any of those?

[SOLVED] - ASUS ROG CROSSHAIR VI HERO QCode 8

This is my first post on this forum. But I'm stuck with my problem. I bought the ASUS CROSSHAIR VI HERO lately after my first Mainboard (MSI X370 KRAIT Gaming) broke. It’s running the Ryzen 5 1600 and 16GB of Corsair Vengeance LPX 3200MHz Cl16. My graphics card is the ASUS ROG STRIX RX580 08G...

forums.tomshardware.com

That's interesting. I don't have custom cables but I'll try re-seating them when I get back home. I also thought that I may be drawing too much power either this new CPU since the TDP is much higher and I'm already using a lot of wattage.

 

[ThomasKinsley]

That's interesting. I don't have custom cables but I'll try re-seating them when I get back home. I also thought that I may be drawing too much power either this new CPU since the TDP is much higher and I'm already using a lot of wattage.

Unless you're running an absurd amount of hard drives or other oddities, you should be well within your power constraints at <400W. But if checking your cables doesn't work, you might want to look into getting a PSU tester for ~$20. The added power might be bringing out the early signs of PSU failure.

 

[Roland Of Gilead]

My motherboard has a clear CMOS button, which I used and it reset the settings but there was no success. I haven't phyiscally taken the battery out though to clear the CMOS but the button should do the same thing.

Id do it anyway to be sure. Without taking the battery out, it's possible there is some microcode lingering.

 

[NickDerno]

Id do it anyway to be sure. Without taking the battery out, it's possible there is some microcode lingering.

Ok, I'll try that now

 

[NickDerno]

Hi everyone,

Just an update on what I've been trying and a few things I've noticed. First off, the no-shows are happening way less often than before. They happen about 5% of the time now when I boot. I haven't really done anything different other than just enable the XMP profile on my ram.

One thing I have noticed is that when I does happen I'll have to turn the PC off multiple times, roughly 4-8 until it starts booting up again consistently. Then it won't happen for a while again. I'm going to keep doing diagnostic tests to try and pinpoint when it doesn't post but in the mean time I'll reset my CMOS battery and see if that helps at all.

Thanks to everyone who has helped so far.