When i turn on XMP my PC turn on but it won't start.

delarox · Feb 22, 2017

I can`t turn on XMP on my on-board switch, my BIOS or Software. When I turn XMP on and boot my PC, my PC turn on but nothing shows on the monitor. then, I have to turn it off and on a couple of time so it can come back on, but when it does come back on it said I need to set everything back to default. in my BIOS the DDR4 is clocked @ 2133 MHz even though is a 3400Mhz

Motherboard.....: ASUS Z170 A
Processor.........: Intel i7-6700 k 4.00GHz
Cooling system.: H110i GTX
DRAM...............: Vengeance LPX 4x4 16GB DDR4 3400MHz
GPU..................: Geforse GTX 1080 Hybrid
Drive.................:1TB of SSD 960 PRO
Power supply....: EVGA 1000G3
Monitor..............: ASUS ROG PG348Q 34-Inch Ultra-wide QHD Swift Curved

chenuki · Feb 22, 2017

Hello, please first upgrade your BIOS to latest, then reset CMOS and load Optimized Defaults. If that doesn't resolve your issue, then please try XMP with only 2 RAM modules installed in slots 1,3 or 2,4 depending on your mobo.

Hope this helps

delarox · Feb 22, 2017

chenuki :

no that didnt work. my BIOS is updated i checked ASUS. i removed the battery to reset the CMOS and i think it did because my time and date when crazy. then i load the optimal default and change the XMP to Profile #1 which is the 3401MHz and save and exit out and the PC got stuck again on black screan.

chenuki · Feb 22, 2017

delarox :

Thank you for trying CMOS reset first. Please look through the two RAM lists on this support page for your RAM part number to see if XMP is supported with 4 DIMMs. some of them only support 2 DIMMs: https://www.asus.com/us/Motherboards/Z170-A/HelpDesk_QVL/

If it is supported on 4 DIMMs then you may be able to manually set the RAM timings close to the XMP profile and get it to boot.

delarox · Feb 22, 2017

chenuki :

delarox :

Thank you for trying CMOS reset first. Please look through the two RAM lists on this support page for your RAM part number to see if XMP is supported with 4 DIMMs. some of them only support 2 DIMMs: https://www.asus.com/us/Motherboards/Z170-A/HelpDesk_QVL/

If it is supported on 4 DIMMs then you may be able to manually set the RAM timings close to the XMP profile and get it to boot.

it said: CORSAIR CMD16GX4M4B3400C16 ver. 4.23 16GB(4GB*4) its the only one the works with Z170A motherboard at 3400MHz and those are the ones i have. how do i manually set the RAM timings close to the XMP profile and get it to boot?

chenuki · Feb 22, 2017

delarox :

chenuki :

it said: CORSAIR CMD16GX4M4B3400C16 ver. 4.23 16GB(4GB*4) its the only one the works with Z170A motherboard at 3400MHz and those are the ones i have. how do i manually set the RAM timings close to the XMP profile and get it to boot?

Ok for that part # it says the board supports only 2 DIMMs with 16-18-18-38 timing. So you can try slots 1,3 or 2,4 with 2 DIMMs only and see if that works. You can also manually set to those timings or start with looser timings and see if it boots then work your way up. There are many guides out there on how to do that.

Hope this helps

delarox · Feb 23, 2017

chenuki :

delarox :

Ok for that part # it says the board supports only 2 DIMMs with 16-18-18-38 timing. So you can try slots 1,3 or 2,4 with 2 DIMMs only and see if that works. You can also manually set to those timings or start with looser timings and see if it boots then work your way up. There are many guides out there on how to do that.

Hope this helps

it said on the Motherboard DDR4 3400 Qualified Vendors List (QVL) is:

*CORSAIR CMD16GX4M4B3400C16 ver. 4.23 16GB(4GB*4) 16-18-18-38
and i have :
*CORSAIR CMK16GX4M4B3400C16 ver. 4.24 16GB(4GB*4) 16-18-18-36, is that the problem?...one letter?...no way?

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