Posted April 23 Hello everyone, This year I built a new PC with Win 11 on board (hardware specs can be found on screenshot below) but I'm having annoying issue that is very random. After starting PC from powered down or waking it up after Sleep there is chance of getting random stutters. It is not always there but happens pretty frequently. Like 1 out of 5 times. The symptoms are first keyboard is starting to "skip a beat" and register keypress few seconds later, then sound (if music is playing) starts creating millisecond noises, then mouse cursor is starting to getting stuck for a few seconds, then pretty much whole computer is stuttering more and more and this time intervals are getting bigger until black screen is happening and computer restarts. I've noticed that if I do reboot right after noticing first symptoms then after restart system runs great. I replaced a lot of different components with doing clean Win 11 install every time. But last component that I have not tried to replace is RAM. I ran MemTest86 with two RAM sticks in and noticed that it is failing and I was wondering if that can be caused by it? Results of the test: https://drive.google.com/file/d/1P8Yajq2PoeHavtInVRHiofU1LyW968Rj/view?usp=drive_link https://drive.google.com/file/d/1ZjewYV_x-5DrYEHvhn0TKuFb8Oq3JURg/view?usp=drive_link Due to the huge air cooler I can't try to simply remove one or try another slot to see if the issue is still there. I've tried to check Windows Event Viewer after black screen is happening but found nothing related to the issue. MemTest86-Report-20240223-163137 (1).html Link to comment Share on other sites More sharing options... Link to post Share on other sites More sharing options...
Posted April 23 4 minutes ago, lexiq said: I ran MemTest86 with two RAM sticks in and noticed that it is failing and I was wondering if that can be caused by it? Definitely. Any memtest fail is unacceptable and means the machine won't work right. F@H Desktop: i9-13900K, ASUS Z790-E, 64GB DDR5-6000 CL36, RTX3080, 2TB MP600 Pro XT, 2TB SX8200Pro, 2x16TB Ironwolf RAID0, Corsair HX1200, Antec Vortex 360 AIO, Thermaltake Versa H25 TG, Samsung 4K curved 49" TV, 23" secondary, Mountain Everest Max Mobile SFF rig: i9-9900K, Noctua NH-L9i, Asrock Z390 Phantom ITX-AC, 32GB, GTX1070, 2x1TB SX8200Pro RAID0, 2x5TB 2.5" HDD RAID0, Athena 500W Flex (Noctua fan), Custom 4.7l 3D printed case Asus Zenbook UM325UA, Ryzen 7 5700u, 16GB, 1TB, OLED GPD Win 2 Link to comment Share on other sites More sharing options... Link to post Share on other sites More sharing options...
Posted April 23 Author 8 minutes ago, Kilrah said: Definitely. Any memtest fail is unacceptable and means the machine won't work right. Thank you for the response Kilrah! I thought that minimal amount of failures might be expected for 80-90% of the systems and was not sure if that can be a culprit of the issues that I'm having. Link to comment Share on other sites More sharing options... Link to post Share on other sites More sharing options...
Posted April 24 2 hours ago, lexiq said: Thank you for the response Kilrah! I thought that minimal amount of failures might be expected for 80-90% of the systems and was not sure if that can be a culprit of the issues that I'm having. No, the error rate you want is something along the lines of once every 10 years. If you get 1-2 errors in the span of a a few hours, there's a fairly large problem with your RAM system, either motherboard/BIOS, memory controller, or actual memory related. Link to comment Share on other sites More sharing options... Link to post Share on other sites More sharing options...
Posted Tuesday at 04:21 PM Author On 4/23/2024 at 7:30 PM, RONOTHAN## said: No, the error rate you want is something along the lines of once every 10 years. If you get 1-2 errors in the span of a a few hours, there's a fairly large problem with your RAM system, either motherboard/BIOS, memory controller, or actual memory related. On 4/23/2024 at 4:23 PM, Kilrah said: Definitely. Any memtest fail is unacceptable and means the machine won't work right. Alright. I updated BIOS and ran Mem test again with XMP on and off. Both times I got green "PASS". But sadly the issue is still there. So I assume the issue was never with the RAM... If you have any other tips I'll take it. Thanks! MemTest86-Report-20240424-091125.html Link to comment Share on other sites More sharing options... Link to post Share on other sites More sharing options...
Posted Tuesday at 04:53 PM 29 minutes ago, lexiq said: Alright. I updated BIOS and ran Mem test again with XMP on and off. Both times I got green "PASS". But sadly the issue is still there. So I assume the issue was never with the RAM... If you have any other tips I'll take it. Thanks! MemTest86-Report-20240424-091125.html 24.8 kB · 0 downloads Alright, the rest of the issues you're experiencing are along the lines of FCLK instability. You can check to see if this is the issue by severely underclocking the FCLK in the BIOS, setting it to something like 1600MHz and seeing if that fixes those issues. If it doesn't, memory instability can sometimes break an OS install, so doing a reinstall might just fix those issues. Otherwise, I'd just RMA the CPU, RAM, and/or motherboard and start fresh with a new one. Link to comment Share on other sites More sharing options... Link to post Share on other sites More sharing options...
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