BSOD HP Slimline Desktop S5710f

My computer keeps on blue screening and I know when blue screening generally happens that it is usually the RAM or the video card. I tried running the MemTest86 using a USB stick and a CD-ROM and it does not boot when restarting the computer. Tried looking at the BIOS to enable USB and setting the priority so the CD-ROM will load first, and still does not work. I just recently installed another 2 GB of ram in my desktop which is a different manufacturer than the other 2 GB of ram that is in there. Could this be an issue why it is blue screening? The video card is a built-in motherboard. When computer restarts and Windows loads, here is the error message and code that it comes with below:

If anyone can help with this issue, it would be greatly apperciated. Very annoying

Problem signature:
Problem Event Name: BlueScreen
OS Version: 6.1.7601.2.1.0.768.3
Locale ID: 1033

Additional information about the problem:
BCCode: 1e
BCP1: FFFFFFFFC0000005
BCP2: FFFFF80002CA14E5
BCP3: 0000000000000000
BCP4: FFFFFFFFFFFFFFFF
OS Version: 6_1_7601
Service Pack: 1_0
Product: 768_1

Files that help describe the problem:
C:\Windows\Minidump\061612-18330-02.dmp
C:\Users\My Name\AppData\Local\Temp\WER-51386-0.sysdata.xml

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Yes, installing RAM that is not the same model, timings, voltages, etc. as the RAM already in the system can cause instability. Remove the new RAM to test.

As you add and remove hardware, follow these steps for ESD safety:

1. Shut down and turn off your computer.
2. Unplug all power supplies to the computer (AC Power then battery for laptops, AC power for desktops)
3. Hold down the power button for 30 seconds to close the circuit and ensure all power drains from components.
4. Make sure you are grounded by using proper grounding techniques, i.e. work on an anti-static workbench, anti-static desk, or an anti-static pad. Hold something metallic while touching it to the anti-static surface, or use an anti-static wristband to attach to the anti-static material while working. If you do not have an anti-static workbench, desk, or pad, you can use your computer tower/case by finding a metal hold in it, such as a drive bay.

Once these steps have been followed, it is safe to remove and replace components within your computer.