RAM upgrade for an HP z240

[SystemCenter]

I am looking to upgrade the memory form 4gigs to 8gigs in a z240 but I have no idea what type I should put in. The parts store labels one set as 2133E an the other 2133U. I would appreciate the help on what to chose to upgrade my system, because this is about the 5th bsod I have gotten on this machine and I am sick of it. After removing the Crucial ram and low profile GTX 1050ti (required no external psu cable connected to run) I put in the system and reinstalling the ram that came with the system, the workstation went out of it's infanite BSOD loop and booted fine. The help would be appreciated. 

One side of the ram that came with the system.A stick of Crucial ram from Amazon.Other side of the stuff in my system currentlyWhat happend after the BSOD.This is what is already in my system.What is in the parts store.

The error files from the BSOD:

==================================================
Dump File : 111318-12994-01.dmp
Crash Time : 11/13/2018 3:30:19 PM
Bug Check String : NTFS_FILE_SYSTEM
Bug Check Code : 0x00000024
Parameter 1 : 00000000`001904fb
Parameter 2 : fffff880`07365b48
Parameter 3 : fffff880`073653b0
Parameter 4 : fffff880`0193de40
Caused By Driver : Ntfs.sys
Caused By Address : Ntfs.sys+fde40
File Description : NT File System Driver
Product Name : Microsoft® Windows® Operating System
Company : Microsoft Corporation
File Version : 6.1.7600.16385 (win7_rtm.090713-1255)
Processor : x64
Crash Address : ntoskrnl.exe+939a0
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\Windows\Minidump\111318-12994-01.dmp
Processors Count : 4
Major Version : 15
Minor Version : 7601
Dump File Size : 262,144
Dump File Time : 11/13/2018 3:31:46 PM
==================================================

==================================================
Dump File : 111318-19437-01.dmp
Crash Time : 11/13/2018 3:06:49 PM
Bug Check String : MEMORY_MANAGEMENT
Bug Check Code : 0x0000001a
Parameter 1 : 00000000`00000031
Parameter 2 : fffffa80`121a42d0
Parameter 3 : fffff880`0a1a1000
Parameter 4 : fffff8a0`020b3649
Caused By Driver : ntoskrnl.exe
Caused By Address : ntoskrnl.exe+939a0
File Description : NT Kernel & System
Product Name : Microsoft® Windows® Operating System
Company : Microsoft Corporation
File Version : 6.1.7601.24291 (win7sp1_ldr_escrow.181110-1429)
Processor : x64
Crash Address : ntoskrnl.exe+939a0
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\Windows\Minidump\111318-19437-01.dmp
Processors Count : 4
Major Version : 15
Minor Version : 7601
Dump File Size : 266,320
Dump File Time : 11/13/2018 3:09:35 PM
==================================================

==================================================
Dump File : 111318-19702-01.dmp
Crash Time : 11/13/2018 3:04:52 PM
Bug Check String : BAD_POOL_HEADER
Bug Check Code : 0x00000019
Parameter 1 : 00000000`00000003
Parameter 2 : fffff900`c1bae5b0
Parameter 3 : fffff900`c1bae5b0
Parameter 4 : fffff900`c3bae5b0
Caused By Driver : win32k.sys
Caused By Address : win32k.sys+888b7
File Description : Multi-User Win32 Driver
Product Name : Microsoft® Windows® Operating System
Company : Microsoft Corporation
File Version : 6.1.7600.16385 (win7_rtm.090713-1255)
Processor : x64
Crash Address : ntoskrnl.exe+939a0
Stack Address 1 :
Stack Address 2 :
Stack Address 3 :
Computer Name :
Full Path : C:\Windows\Minidump\111318-19702-01.dmp
Processors Count : 4
Major Version : 15
Minor Version : 7601
Dump File Size : 262,144
Dump File Time : 11/13/2018 3:06:20 PM
==================================================

Thanks in advance.

[DGroves]

wish more people would take the time to provide information as good as you did.

as to your hoew do i buy the right ram,.....it might supprise you to  just go to a ram makers web page........

http://www.crucial.com/usa/en/memory-info

both of your ram modules are the same, but the numbers differ because they came from two diffrent batches made at seperate times.

also note, the crashes might be caused by the video card or by your existin ram having a bad "dimm" module

if you are crash free right now, i would just add the new ram and see if still crash free. when sure the system is ok try the video card if it now crashes the card or the power supply or the video drivers need to checked out one at a time

start by removing the video card drivers and downloading the latest nvidia driver for your card. if still issues have power supply checked