F5F Stay Refreshed Hardware Desktop PC fails to start because of XMP settings. Need assistance.

PC fails to start because of XMP settings. Need assistance.

PC fails to start because of XMP settings. Need assistance.

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EndShulker
Member
131
09-15-2022, 06:52 PM
#1
I'm feeling quite anxious and nervous right now. I just got my new PC about a month ago. The specs that came with it were pretty good—Lenovo Legion Tower T7 i9 13900KF, RTX 4080, two 16GB DDR5 5200MHZ sticks. I accidentally broke the machine. Let me clarify what happened: From my old PC, I had RAM from it that I installed into this new one. It was Corsair Vengeance RGB 4x16GB 5200MHZ, and all the RAM sticks worked fine with the new tower until now. We’re talking about the 32GB RAM from the original build, which came with a “Green Ram” case. The Vengeance RAM had RGB lighting, but I noticed today my RAM was running at 4000MHZ instead of the expected higher speed. So I went into BIOS and enabled XMP. Everything turned on normally—lights, fans, everything seemed okay. The RGB lights also worked perfectly. But there’s a beep noise, three short followed by one long sound. According to Lenovo, that means “Memory not detected,” which suggests the motherboard can’t handle the 5200MHZ speed. I tried resetting it by removing the CMOS battery, but that didn’t fix it. What should I do next?
E
EndShulker
09-15-2022, 06:52 PM #1

I'm feeling quite anxious and nervous right now. I just got my new PC about a month ago. The specs that came with it were pretty good—Lenovo Legion Tower T7 i9 13900KF, RTX 4080, two 16GB DDR5 5200MHZ sticks. I accidentally broke the machine. Let me clarify what happened: From my old PC, I had RAM from it that I installed into this new one. It was Corsair Vengeance RGB 4x16GB 5200MHZ, and all the RAM sticks worked fine with the new tower until now. We’re talking about the 32GB RAM from the original build, which came with a “Green Ram” case. The Vengeance RAM had RGB lighting, but I noticed today my RAM was running at 4000MHZ instead of the expected higher speed. So I went into BIOS and enabled XMP. Everything turned on normally—lights, fans, everything seemed okay. The RGB lights also worked perfectly. But there’s a beep noise, three short followed by one long sound. According to Lenovo, that means “Memory not detected,” which suggests the motherboard can’t handle the 5200MHZ speed. I tried resetting it by removing the CMOS battery, but that didn’t fix it. What should I do next?

L
Legend_One
Junior Member
1
09-16-2022, 09:34 AM
#2
Use a different motherboard. The 4x16GB configurations need significant BIOS tweaks, and Lenovo probably won’t provide the necessary settings for you to adjust them yourself. If you can locate memory configuration options to tweak things like VCCSA, VDDQ TX, VDD2, PLL voltages, along with timing and frequency parameters, you might succeed. Otherwise, it seems you’re likely facing a tough situation.
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Legend_One
09-16-2022, 09:34 AM #2

Use a different motherboard. The 4x16GB configurations need significant BIOS tweaks, and Lenovo probably won’t provide the necessary settings for you to adjust them yourself. If you can locate memory configuration options to tweak things like VCCSA, VDDQ TX, VDD2, PLL voltages, along with timing and frequency parameters, you might succeed. Otherwise, it seems you’re likely facing a tough situation.

H
heraghon4
Junior Member
2
09-16-2022, 11:15 AM
#3
You’re starting from scratch with this topic. SOL isn’t a common term here, so let’s clarify. You mentioned replacing your whole motherboard but don’t have another one. What alternatives are available? Think about other options you could explore first.
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heraghon4
09-16-2022, 11:15 AM #3

You’re starting from scratch with this topic. SOL isn’t a common term here, so let’s clarify. You mentioned replacing your whole motherboard but don’t have another one. What alternatives are available? Think about other options you could explore first.

M
Markiamin
Junior Member
15
09-23-2022, 07:25 AM
#4
Right away it seems you're missing the necessary BIOS configurations. Most OEM boards restrict access to only essential settings, making it hard to achieve full performance. You typically rely on an XMP profile at best. The required adjustments cover various voltage parameters (VCCSA, VDDQ TX, VDD2, PLL), memory frequency options (manual instead of just XMP), timing configurations, and possibly training or ODT settings. On most OEM boards, you'd find very few, if any, of these options. That's why I suggest considering a different motherboard—it's likely the only viable path. If you're open to it, swapping two DIMMs to 2x16GB can work, and returning your 4x16GB kit might help you get a 2x32GB setup instead. For 64GB, exchanging your current board for something supporting larger capacities could be the solution.
M
Markiamin
09-23-2022, 07:25 AM #4

Right away it seems you're missing the necessary BIOS configurations. Most OEM boards restrict access to only essential settings, making it hard to achieve full performance. You typically rely on an XMP profile at best. The required adjustments cover various voltage parameters (VCCSA, VDDQ TX, VDD2, PLL), memory frequency options (manual instead of just XMP), timing configurations, and possibly training or ODT settings. On most OEM boards, you'd find very few, if any, of these options. That's why I suggest considering a different motherboard—it's likely the only viable path. If you're open to it, swapping two DIMMs to 2x16GB can work, and returning your 4x16GB kit might help you get a 2x32GB setup instead. For 64GB, exchanging your current board for something supporting larger capacities could be the solution.

J
Joofok
Junior Member
17
09-23-2022, 06:50 PM
#5
I've tested various sizes like 2x16GB, 1x16GB, etc. The problem remains the same. It seems the motherboard struggles with the XMP profile even though it's running at 5200MHz. I'm not sure what to do next.
J
Joofok
09-23-2022, 06:50 PM #5

I've tested various sizes like 2x16GB, 1x16GB, etc. The problem remains the same. It seems the motherboard struggles with the XMP profile even though it's running at 5200MHz. I'm not sure what to do next.

V
VitoSEXY
Posting Freak
797
10-04-2022, 12:55 PM
#6
Which slots are you inserting 2x16GB? Only slots 2 and 4 from the CPU side need to handle 5200 when loaded. If so, it might mean a BIOS update was released that doesn’t support memory properly. Check Lenovo support for possible fixes.
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VitoSEXY
10-04-2022, 12:55 PM #6

Which slots are you inserting 2x16GB? Only slots 2 and 4 from the CPU side need to handle 5200 when loaded. If so, it might mean a BIOS update was released that doesn’t support memory properly. Check Lenovo support for possible fixes.

C
catlover101
Junior Member
31
10-04-2022, 01:45 PM
#7
Disconnect the computer, remove the CMOS, press the power button, wait for the process, then reconnect and continue.
C
catlover101
10-04-2022, 01:45 PM #7

Disconnect the computer, remove the CMOS, press the power button, wait for the process, then reconnect and continue.