no-post Can't Post after Overclocking Zen 2 and Memory

[Linnaeus]

Hi there,

 

As the title suggests, the system was working perfectly fine and then I changed almost all the settings for my RAM in the advanced menu of my bios and also one setting regarding the CPU (can't remember what, but I tried to overclock to 4.6Ghz by entering "46" in the 'advanced' section NOT the 'extreme' section) and now, my system won't post.

 

Everything is effectively brand new, all shipped to my house within the last fortnight.

Here's my gear:

ASUS ROG Crosshair VIII Hero (WiFi)

Ryzen 7 3700x

Stock AMD Wraith Prism Cooler

MSI VENTUS GP OC RTX 2080 TI

Samsung 970 Evo Plus 500Gb

G.Skill 3600Mhz 16Gb (8x2) DDR4 16-19-19-19-35 F4-3600C16D-16GTZNC

ROG Strix 850W 80+ Gold Fully Modular Power Supply

 

I get power to all my components, my CPU cooler's fans and lights turn on, my GPU's fans turn on and the RAM lights up.

My motherboard provides a Q-code LED, which cycles through RAM (yellow), CPU(red), VGA (white) and system boot(yellow green). Mine is stuck at VGA(white) and displays these codes:

0C dE aD 30 47 01 92

 

The only two codes that aren't part of a booting up sequence are 0C, dE and 47.

"0C", according to my manual is "reserved for future AMI SEC error codes". Nice and vague.

dE and 47 are nowhere to be found, I've googled for them but no forum has them listed.

 

My own troubleshooting:

This is all being done without any connection to my case or external USB items. Everything that is connected is my CPU, CPU cooler + it's RGB and USB, alternating GPUs for external display, RAM and PSU.

 

I've unplugged the PSU, waited five minutes and then removed the CMOS battery. I waited 30 minutes and then put it back in. Nothing changed.

 

I used an 'LN2 Mode Jumper' which the manual said would 'remedy the cold-boot bug during POST and help the system boot successfully.' Nothing changed. Granted, I'm not sure if I have the cold-boot bug, but it was worth a try.

 

I tried the onboard CMOS button while the system was and was not connected to power by pressing it once and then when that didn't work by holding it down. Nothing changed.

 

I tried swapping out my GPU for the GT610 incase I'd messed up my 4 day old 2080 Ti (dw, it was brand new from Mwave and cheap) and

 

I've reseated both my GPU's (not simultaneously) in the two accessible PCI-e lanes

 

I've reseated both my RAM modules, also tried to boot with just one.

 

 

Now here's the kicker. I'm writing this on a MacBook. To update the bios via usb flashback, I need to install the bios file and rename it 'CH8W.CAP'. The download includes a .exe program that will automatically change the file's name. Because I don't have access to a windows computer right now, I decided to manually rename the file by right clicking and then selecting rename. When I plug the USB into the dedicated slot, the USB flashes signalling that it's receiving power etc. When I press the flashback button for three seconds it turns blue. At this point if it was working successfully it would continue blinking until it was finished updating. Mine blinks four times and then remains a horrible, static blue.

 

Any tips? Maybe some help with those Q-codes?

 

I told my mate what happened about fiddling with an overclock, and he put his face in his hands for about a minute.

 

Fair enough.

[onlybuilt4cubanxlinx]

Boot with out the ram installed. Boot with 1 stick of ram installed. Move ram stick between slots 1-4 and try booting. I've had this happen (with out the error codes) when overclocking either CPU or ram and it was a scary situation, but I just kept fiddling with the ram slots / cmos batt and it magically booted 1 out of the 30 attempts and I never looked back lol. I went XTREME on the OC as well cuz I was inpatient with incremental increases.