P7H55D has blue screen with new RAM

Andrew Sirenko · Mar 4, 2014

i have:
MB: Asus P7H55D (support RAM that CPU supports)
CPU: i3-540 (support RAM 1333mhz)
RAM: (Kit of 2x2048) Kingston DDR3-1600 PC3-12800 HyperX Blu (KHX1600C9AD3B1K2/4G).
it works fine with that kit, but now i want to add 4Gb of mostly the same RAM - but black edition (KHX16C9B1B/4) - i have the blue screen...
i'm very affraid of any manual control in BIOS, i need proffesional help
i can't understand what do i need to fix... plz help

Andrew Sirenko · Mar 4, 2014

Xcom46 :

blue screen - DRIVER_IRQL_NOT_LESS_OR_EQUAL
i can't even start my system with only new memory...

Tradesman1 · Mar 4, 2014

OK, start with the old sticks only in slots 1-3, and enable XMP, select profile 1, save, exit and boot back to BIOS, now raise the CPU VTT to 1.17, save exit and shutdown. Now try installing the other two sticks in 2-4 and give it a try

Andrew Sirenko · Mar 4, 2014

Tradesman1 :

I have only one new memory stick - 4Gb - it's not a problem?
i have enabled XMP - now i have this - https://www.dropbox.com/sc/u76e8u4evjijld2/oIRdHleOsK
What is VTT?
if i install my third 4 Gb stick to 2-nd slot (when 1 and 3 having 2024 Gb each) and set IMC Voltage to 1.15 system is shutting down all the time, even before BIOS

Tradesman1 · Mar 4, 2014

Try the 4GB in slot 1 and the others in 3-4, VTT is the MC voltgae, interchangeable with IMC, different mobo makers give different names

Andrew Sirenko · Mar 5, 2014

Tradesman1 :

i was trying to do like you said, but it can't even start BIOS with that configuration.
Only once i had a success with 4gb (new) in 1-st slot and 2gb (old) in 3-rd slot, but when i add another one - nothing works at all...
mostly all the time i have blue screen or system stopped before BIOS
what else can i try?
this is a configuration with old sticks 2x2Gb - https://www.dropbox.com/sh/xlusxb5hy8rapf0/htxIDMkuhV

Tradesman1 · Mar 5, 2014

If the 4GB and 1 of the twos work in 1-3, go into BIOS with them and raise the voltages as mentioned and also change the CR (command rate ) from the current 1T to 2T

Andrew Sirenko · Mar 5, 2014

Tradesman1 :

boot with success was only once, after that i can't repeat it.
Can't find CR in BIOS at all, have only some 1N and 2N on timings
what voltages to set? only for IMC 1.15 ?

Andrew Sirenko · Mar 8, 2014

Tradesman1 :

Ok, i bought a new RAM KHX1600C9D3/4G - same problem - blue screen on windows start loading...
Plz help me, i don't know what to do...

Andrew Sirenko · Mar 10, 2014

Xcom46 :

Asus support said that those RAM are not supported by my mobo

, only 2Gb...
thanks to everyone for help.

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P7H55D has blue screen with new RAM

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