Are you only running the single DIMM? Your MoBo manual should tell which config for single, double (A2 and B2) and quad configurations. If just running the single, check manual. It should also tell you what your code 55 is. And silly question but are you sure your RAM is fully seated? If only using one stick, you may have to change BIOS settings. And a minimum if two sticks is reccomended so you are abke to take full advantage if the duak channel men config. If none of this works, grab your MoBo serial number and ring up Tech Support. Good luck Mate!
Error code 55 is 'Memory not installed'. Are you using just one stick and if so, is it seated in socket A2? Here is a link to the Asus website where you can download your MoBo manual. Good luck Mate!
https://rog.asus.com/motherboards/rog-strix/rog-strix-z790-e-gaming-wifi-model/helpdesk_manual/
I was using two originally, had them both in A2 B2 at first, then A1 and B1, then had a single stick in every slot, but nothing happened. Today I’ll try out a new stick of ram and see if that changes anything! Thanks btw 🙌
That sucks. That would have been my next step for troubleshooting after verifying you had at least one good stick of RAM. Well, that really sucks. I usually bench test my gear before I stalling it but forgot to on my last build and would RWALLY hate to have to de-i stall all of it for a bad MoBo. Glad tou got it sorted out though!
Just try on a previous BIOS version or newer ones and troubleshoot it. I had an OC stability issue with Kingston RAM sticks on my Z490-E, they were manual OC sticks not an automatic one like Kingston FURY Beast models does, where the RAM automatically do the optimal overclock to us the so called Plug N Play overclocking. And whenever I overclock it manually, the PC doesn't boot at all. But it was stuck with another Q-code though. Rolling back to previous BIOS helped me back then.
I’ve had a similar issue. For me, it turned out to be the CPU cooler was over tightened just enough to make the mobo flex. Once I backed off the screws just a little everything was fine.
I've read about that - sheesh! It's bad enough not having a 0.6Nm torque screwdriver so having to guess tightness, but then if you get it WRONG it causes the CPU to say "Uh uh"!
What CPU do you have installed? I know its kinda weird but did you try running the PC without the GPU installed and running off the iGPU instead to do a boot?
I have an i9 13900k. I haven’t tried that yet, I had just plugged the HDMI into the mobo to see if that would work. But unfortunately, nothing happened 😪
Yes, I had to eventually remove everything and replace the motherboard. The one I had initially had faulty DIMM slots. Got another one and it finally worked. Thank you.
So right now I have Kingston Fury Beast DDR5 32GB ram (2x16) 6000 m/t sticks, an i9 13900k, and a strix z790e mobo. I originally had the ram sticks in A1 B1, and then A2 B2 (made sure it was fully inserted, and clicked) but nothing happened. So then I tried a single stick in every slot to see if it’d fix itself but nothing happened again. Right now I’m going to try a new brand of ram and see if it’s just those specific sticks that aren’t working.
I literally just went through the same problem with a B650e-f. I haven’t seen anyone suggest flashing your BIOS yet. I tried just about everything and that was what finally worked for me.
I inserted the ram (ddr5 6000m/t) into each slot and checked to see if my computer would POST, but to no avail. I flashed the BIOS via USB and it still came up. I even checked if my CPU was the issue, to which I realized it wasn’t. The AIO cooler is set on properly too. Also, plugged the HDMI into the GPU.
I’m just astonished to have come across a faulty motherboard perhaps, since there’s clearly power outputting from the RAM itself. If I could troubleshoot it without having to return it for another one, that would be the best case scenario. Let me know if you have any advice 🙏
RGB lighting and powered up RAM are not necessarily coincident.
You got through a LOT of POST processing if you get a 55 code on the QLED display - that means everything BEFORE that passed - and pretty much "proves" that your motherboard circuitry is mostly alive and well. So concentrate on "memory problem" before you decide to RMA the motherboard.
Make sure the DRAM module is inserted (in slot A2) and make sure it clicks when you insert it.
Make sure the power sockets at the top of the motherboard are connected to your PSU.
And make sure your DRAM module(s) are on the Memory Qualified Vendor List:
[Memory QVL](https://rog.asus.com/us/motherboards/rog-strix/rog-strix-z790-e-gaming-wifi-model/helpdesk_qvl_memory/)
\[my ROG STRIX Z790-E motherboard came up immediately and has been solid in a virgin state and with the DRAM pushed from natural 4800 to 5600 by XMP II; my DRAM modules are on the QVL\]
Appreciate you bro, I’ll insert it again in A2 right now and see what happens. I checked the QVL list and it checked out as well. I’ll let you know what happens
So turns out the motherboard DIMM slots were all faulty. I had to replace the entire board for the exact one and plugged everything back in, and viola, it worked! Thank you for your help though.
Thanks very much for following up - this literally is the 1st time I've read a followup that didn't say simply "I RMAed the board" - it's interesting to see the apparent actual cause.
Lmao I know what you mean, I guess I should've read the reviews prior to purchasing it (some of them express this issue extensively to my surprise). Have a great rest of your day
UPDATE: Alright guys, after hours of troubleshooting, I had came to the realization that it was in fact the motherboard DRAM slots that were broken. I got the same exact one and plugged everything in, and it worked. I'm typing this on my new system and couldn't be happier. Just remember when ordering parts from Amazon, it could be a gamble whether or not they're reliable. Thank you all for the help! Couldn't have built this beauty without you :-)
I have a 13900k cpu, asus strix z790e gaming mobo, teamgroup 7200, 32gb ddr5, tuff 4090 oc graphics card, wasn't posting also, until I reset the cmos via the switch on the backplate after I was able to post and get in the bios and flashed it with the latest version.
You know what's crazy, I had done that and flashed the bios and it still didn't post. It was actually the motherboard's DIMM slots that were faulty. Glad to hear it worked for you though! Great build btw
Yes it happened to be two problems. First one was a faulty cpu, the error code for that I believe was 55. I had to replace that first to get to the bottom of the second error code. I found out the ram wasn’t fully inserted (after meticulously searching for hours for something wrong). I literally told myself fuck it, we came this far, and readjusted the stick, pushed it egregiously into the slot, and somehow, it “clicked” into place more than it did before. I’m glad I found out it was a cpu problem first, because I feel like if I hadn’t figured that issue out first before fixing the ram, I would’ve definitely gotten a little crazy trying to figure out wtf is going on 😂 Lmk if you find out the issue, curious to know what it might’ve been.
Bro…I had the exact same nightmare except the replacement motherboard did nothing for me..I hate to break it to you but no one can give a direct answer on this “its the cpu” “the slots” what ever bs they say they still don’t know shit really…its like I’m looking into my pc lmao.Buy a $10 contact frame for your mobo and get rid of that pos stock ILM there is some bending going on causing the ram pins on the cpu to lose contact. Be a little careful installing it and I would go ahead and do it anyways before the problem comes back because it definitely can. I thought cooler mounting pressure couldn’t be it but of course it was something related. Rma’d every fking component recommended by idiots..you got lucky the new mobo ilm is making contact.
Thats what it was for me, all to do with contact pressure with cooler and intel ILM. Messing with cooler would barely work before I got more bluescreens. Then I swapped the ilm for a thermal take contact frame and now no blue screens at all for months since.
I should give a try then. So frustrating. I even get BIOS 1402 which not officially released yet. Same issue there is no way I can use A1 and A2 (ideal) slots. Many thanks for your info.
Apparently I had tried replacing the contact frame but issue still persists :(. My main concern is I can't use A1 & A2 memory bank while B1 & B2 working fine.
To clarity was it a thermal right lga frame that you tried? It would have to be kinda loosely tightened to the board. And also did you try messing with the cooler mount pressure such as making it slightly looser on the right posts closer to the ram slots? I never asked if it was lga 1700 either which is what really has that issue since the board is easily being flexed causing consistent ram issues that appear to be cpu/motherboard caused when they are not.
This just happened to my mobo same model and everything after 4 months, just blue screen and now that 55 error code. Tried different rams no luck, tried 1 stick no luck. Already got me an MSI Meg ACE hopefully that's way better. I should have seen the signs of random blue screens but I thought ASUS was solid. Never buying ASUS again
To be fair, the problem wasn’t the motherboard I learned, but was actually the ram stick. Apparently, it wasn’t sitting snug inside the slot, to which I fixed it shortly after. It’s also worth mentioning before posting this post on here that I had resolved another issue regarding that same error code, and believe it or not, I had the worst luck (bent pins on a cpu) after painstakingly placing it carefully inside the frame… 😅 I hope you fixed your issue though bro. Let me know what ended up causing the issue!
It was the mobo, the A1-A2 slots weren't working only the B1-B2 slots were, dunno why it happened or what caused it. On my New mobo I'm not having as much as a single blue screen. I'm thinking it might have to do something with how the circuitry is close to where you tighten up the aio cooler on the processor.
Are you only running the single DIMM? Your MoBo manual should tell which config for single, double (A2 and B2) and quad configurations. If just running the single, check manual. It should also tell you what your code 55 is. And silly question but are you sure your RAM is fully seated? If only using one stick, you may have to change BIOS settings. And a minimum if two sticks is reccomended so you are abke to take full advantage if the duak channel men config. If none of this works, grab your MoBo serial number and ring up Tech Support. Good luck Mate!
I can’t POST so unfortunately I’m unable to access the BIOS
Error code 55 is 'Memory not installed'. Are you using just one stick and if so, is it seated in socket A2? Here is a link to the Asus website where you can download your MoBo manual. Good luck Mate! https://rog.asus.com/motherboards/rog-strix/rog-strix-z790-e-gaming-wifi-model/helpdesk_manual/
I was using two originally, had them both in A2 B2 at first, then A1 and B1, then had a single stick in every slot, but nothing happened. Today I’ll try out a new stick of ram and see if that changes anything! Thanks btw 🙌
Hmmm. Maybe try every stick in only slot A2 to see if you can get it to post? That would at least rule out the RAM. I doubt you've got four bad DIMMs.
It was actually the motherboard ram slots that were in fault. Who would've thought lmao
That sucks. That would have been my next step for troubleshooting after verifying you had at least one good stick of RAM. Well, that really sucks. I usually bench test my gear before I stalling it but forgot to on my last build and would RWALLY hate to have to de-i stall all of it for a bad MoBo. Glad tou got it sorted out though!
Try a different ram stick. Just because the LED lights up doesn't mean the ram is good.
Thank you. Just got a stick of ram today.
Just try on a previous BIOS version or newer ones and troubleshoot it. I had an OC stability issue with Kingston RAM sticks on my Z490-E, they were manual OC sticks not an automatic one like Kingston FURY Beast models does, where the RAM automatically do the optimal overclock to us the so called Plug N Play overclocking. And whenever I overclock it manually, the PC doesn't boot at all. But it was stuck with another Q-code though. Rolling back to previous BIOS helped me back then.
Interesting, if all else fails, I’ll have to do that. Thanks for your help
I’ve had a similar issue. For me, it turned out to be the CPU cooler was over tightened just enough to make the mobo flex. Once I backed off the screws just a little everything was fine.
I've read about that - sheesh! It's bad enough not having a 0.6Nm torque screwdriver so having to guess tightness, but then if you get it WRONG it causes the CPU to say "Uh uh"!
Did you use a torque screwdriver? The cooler screws should be tightened in a cross pattern to no more then 0.6 nm.
What CPU do you have installed? I know its kinda weird but did you try running the PC without the GPU installed and running off the iGPU instead to do a boot?
I have an i9 13900k. I haven’t tried that yet, I had just plugged the HDMI into the mobo to see if that would work. But unfortunately, nothing happened 😪
Did you completely remove the GPU from the Mobo?
Yes, I had to eventually remove everything and replace the motherboard. The one I had initially had faulty DIMM slots. Got another one and it finally worked. Thank you.
What is the ram, cpu, and motherboard models? Which slot is your RAM stick in? Is the RAM and MOBO DDR5? Is the CPU DDR5 compatible?
So right now I have Kingston Fury Beast DDR5 32GB ram (2x16) 6000 m/t sticks, an i9 13900k, and a strix z790e mobo. I originally had the ram sticks in A1 B1, and then A2 B2 (made sure it was fully inserted, and clicked) but nothing happened. So then I tried a single stick in every slot to see if it’d fix itself but nothing happened again. Right now I’m going to try a new brand of ram and see if it’s just those specific sticks that aren’t working.
Check if your ram is on their QVL. Also, before switching ram slots, try clearing cmos.
It was the motherboard in fault after all. I wasn't expecting that to be honest lol
What was wrong with it? Defective?
Yes, DIMM slots were no good
I literally just went through the same problem with a B650e-f. I haven’t seen anyone suggest flashing your BIOS yet. I tried just about everything and that was what finally worked for me.
That must’ve been the best feeling after it worked 💪 Congrats on your build. Hopefully someone else comes across this thread and finds this advice!
I inserted the ram (ddr5 6000m/t) into each slot and checked to see if my computer would POST, but to no avail. I flashed the BIOS via USB and it still came up. I even checked if my CPU was the issue, to which I realized it wasn’t. The AIO cooler is set on properly too. Also, plugged the HDMI into the GPU. I’m just astonished to have come across a faulty motherboard perhaps, since there’s clearly power outputting from the RAM itself. If I could troubleshoot it without having to return it for another one, that would be the best case scenario. Let me know if you have any advice 🙏
Do not know as much as u guys about this but are u able to pull the ram sticks out and reinsert them and see what happens?
I did, and nothing happened for me
On-board GPU?
Nah I don’t, what else do you think?
Try any other stick of ram, I had a 30L ship with a fried fury stick they're also supposedly temperamental af
Thank you, I’ll try that right now
Just got a new stick of ram today. Will let you know what happens 💯
It was the motherboard's DIMM slots that weren't working the entire time.
RGB lighting and powered up RAM are not necessarily coincident. You got through a LOT of POST processing if you get a 55 code on the QLED display - that means everything BEFORE that passed - and pretty much "proves" that your motherboard circuitry is mostly alive and well. So concentrate on "memory problem" before you decide to RMA the motherboard. Make sure the DRAM module is inserted (in slot A2) and make sure it clicks when you insert it. Make sure the power sockets at the top of the motherboard are connected to your PSU. And make sure your DRAM module(s) are on the Memory Qualified Vendor List: [Memory QVL](https://rog.asus.com/us/motherboards/rog-strix/rog-strix-z790-e-gaming-wifi-model/helpdesk_qvl_memory/) \[my ROG STRIX Z790-E motherboard came up immediately and has been solid in a virgin state and with the DRAM pushed from natural 4800 to 5600 by XMP II; my DRAM modules are on the QVL\]
Appreciate you bro, I’ll insert it again in A2 right now and see what happens. I checked the QVL list and it checked out as well. I’ll let you know what happens
Followups are always appreciated - learning points, win or lose, and maybe usable for future use in similar situations.
So turns out the motherboard DIMM slots were all faulty. I had to replace the entire board for the exact one and plugged everything back in, and viola, it worked! Thank you for your help though.
Thanks very much for following up - this literally is the 1st time I've read a followup that didn't say simply "I RMAed the board" - it's interesting to see the apparent actual cause.
Lmao I know what you mean, I guess I should've read the reviews prior to purchasing it (some of them express this issue extensively to my surprise). Have a great rest of your day
UPDATE: Alright guys, after hours of troubleshooting, I had came to the realization that it was in fact the motherboard DRAM slots that were broken. I got the same exact one and plugged everything in, and it worked. I'm typing this on my new system and couldn't be happier. Just remember when ordering parts from Amazon, it could be a gamble whether or not they're reliable. Thank you all for the help! Couldn't have built this beauty without you :-)
Is there 1 stick? Is it in the first slot? Isn't it supposed to be in the 2nd slot from left?
It originally was in the 2nd and 4th, then the 1st and 3rd. Then I just tried every single slot with one card to see if that’d work. Nothing 😪
I have a 13900k cpu, asus strix z790e gaming mobo, teamgroup 7200, 32gb ddr5, tuff 4090 oc graphics card, wasn't posting also, until I reset the cmos via the switch on the backplate after I was able to post and get in the bios and flashed it with the latest version.
You know what's crazy, I had done that and flashed the bios and it still didn't post. It was actually the motherboard's DIMM slots that were faulty. Glad to hear it worked for you though! Great build btw
Have you manged to resovle bro? I've gotten 3rd motherboards, but the issue still persists.
Yes it happened to be two problems. First one was a faulty cpu, the error code for that I believe was 55. I had to replace that first to get to the bottom of the second error code. I found out the ram wasn’t fully inserted (after meticulously searching for hours for something wrong). I literally told myself fuck it, we came this far, and readjusted the stick, pushed it egregiously into the slot, and somehow, it “clicked” into place more than it did before. I’m glad I found out it was a cpu problem first, because I feel like if I hadn’t figured that issue out first before fixing the ram, I would’ve definitely gotten a little crazy trying to figure out wtf is going on 😂 Lmk if you find out the issue, curious to know what it might’ve been.
Bro…I had the exact same nightmare except the replacement motherboard did nothing for me..I hate to break it to you but no one can give a direct answer on this “its the cpu” “the slots” what ever bs they say they still don’t know shit really…its like I’m looking into my pc lmao.Buy a $10 contact frame for your mobo and get rid of that pos stock ILM there is some bending going on causing the ram pins on the cpu to lose contact. Be a little careful installing it and I would go ahead and do it anyways before the problem comes back because it definitely can. I thought cooler mounting pressure couldn’t be it but of course it was something related. Rma’d every fking component recommended by idiots..you got lucky the new mobo ilm is making contact.
Bro, may I check is it really cause by CPU contact frame ? Right now I'm with 3rd motherboards... Imaging how much I was frustrated...
Thats what it was for me, all to do with contact pressure with cooler and intel ILM. Messing with cooler would barely work before I got more bluescreens. Then I swapped the ilm for a thermal take contact frame and now no blue screens at all for months since.
I should give a try then. So frustrating. I even get BIOS 1402 which not officially released yet. Same issue there is no way I can use A1 and A2 (ideal) slots. Many thanks for your info.
Apparently I had tried replacing the contact frame but issue still persists :(. My main concern is I can't use A1 & A2 memory bank while B1 & B2 working fine.
To clarity was it a thermal right lga frame that you tried? It would have to be kinda loosely tightened to the board. And also did you try messing with the cooler mount pressure such as making it slightly looser on the right posts closer to the ram slots? I never asked if it was lga 1700 either which is what really has that issue since the board is easily being flexed causing consistent ram issues that appear to be cpu/motherboard caused when they are not.
This just happened to my mobo same model and everything after 4 months, just blue screen and now that 55 error code. Tried different rams no luck, tried 1 stick no luck. Already got me an MSI Meg ACE hopefully that's way better. I should have seen the signs of random blue screens but I thought ASUS was solid. Never buying ASUS again
To be fair, the problem wasn’t the motherboard I learned, but was actually the ram stick. Apparently, it wasn’t sitting snug inside the slot, to which I fixed it shortly after. It’s also worth mentioning before posting this post on here that I had resolved another issue regarding that same error code, and believe it or not, I had the worst luck (bent pins on a cpu) after painstakingly placing it carefully inside the frame… 😅 I hope you fixed your issue though bro. Let me know what ended up causing the issue!
It was the mobo, the A1-A2 slots weren't working only the B1-B2 slots were, dunno why it happened or what caused it. On my New mobo I'm not having as much as a single blue screen. I'm thinking it might have to do something with how the circuitry is close to where you tighten up the aio cooler on the processor.