HP Elite 8300 SFF displaying a constant Blue Shield Screen

[TeleFigueroa]

After a few minutes and running any program, there comes the Blue Shield with different names, like: Memory Management, System Service Exception, Kernell Security Check Failure, Page Fault in non page area, Quota underflow, DPC Watch Dog Violation, etcetera.

This computer came with a Hard Disk and I replaced it with a SamsuSSD. Left the Hard Disk as storage.

I have tried changing the memories (it came with 16g), taking out a WiFi board recently installed, removing the Optical Drive, disconnecting the storage drive. I don't know what else to do. 

Probably should take it to a "Service Shop" but the computer cost me around $175.00. Well, maybe.

PLEASE HELP.

[itsmyname]

@TeleFigueroa -- is the computer booting from the old disk-drive, or from the new SSD?

I presume that you have installed Windows onto the new SSD ?!?!

Can you physically disconnect the power & data cables from the old disk-drive?

After you do so, will the computer load Windows from the SSD, since the old disk-drive cannot be accessed.

[TeleFigueroa]

Yes, the comp is booting from the SSD.

I physically disconnected de Hard Drive and left only the SSD. There is where I have all these problems. 
I used a program called Samsung Migration to migrate everything from the Hard Drive to the Samsung SSD. It worked real fine for about 8 months. Now is when all these problems appeared. 

[itsmyname]

@TeleFigueroa -- I have tried changing the memories (it came with 16 GB)

What happens if you remove the "new" RAM, and reinstall the old RAM? Any better?

Also, see: Memtest86+ - Advanced Memory Diagnostic Tool

for a bootable utility that does extensive testing of your current RAM.