Stress test memory utilization only reaches 3000MB

I would not expect Intel's stress test to use all available RAM in your system. That's not quite the point of the test. It's more of a general pass / fail system for the RAM subsystem, at it's current settings, under a heavy work-load, rather than a complete bit testing system, to verify every memory location as being good.

If Windows Memory Diagnostic is reporting an error with your RAM, you would do well to get a second opinion and dig further.

There are plenty of programs out there, but here are links to two respectable ones, both of which are free, and I would recommend one or even both, as one is a fork of the other and in rare occasions will have differing opinions about the reliability of RAM.

MemTest86:

http://www.memtest86.com/

MemTest86+:

http://www.memtest.org/

If either of those also return memory errors, your best bet is to consider at least some of your RAM as defective or malfunctioning.

Even while not defective, your RAM can easily return bad values if it's improperly configured, so a result of errors being returned is not yet all you should do to determine a defect.

If you are comfortable, you should really start by determining that your RAM is configured properly, even before trying to do any tests upon it.

With a free program such as CPU-Z:

http://www.cpuid.com/softwares/cpu-z.html

You can look at the SPD (Serial Presence Detect) information for each of your installed memory cards and with that information written down, you can look at the actual running speeds of the memory. If the column that matches the speed your RAM is running at, has values that differ from your actual running values, you need to correct those timings through BIOS.

Be careful though, as messing with things like that can render your computer unbootable. If you're really uncomfortable with this, I recommend having a more experienced friend or even a shop do further work.

If you have determined all of your memory settings are within the designed specifications for the modules, or have adjusted them to be within the rated tolerances, then you can finally get to testing the RAM and expect reasonably realistic results from a memory testing program.

Once you have determined that you are getting memory errors, assuming you can't read memory addresses to know which module inside the computer it is, you need to start isolating your RAM modules inside the computer, then retesting. You will likely find it's only a single stick out of 2 or 4 that is malfunctioning, unless you have bad settings. Pulling all but one module, then retesting, will tell you which module is defective.

Once the defective memory module has been determined, you will want to contact the manufacturer to request an RMA (Return Material Authorization.) Most reputable brands of RAM module manufacturers have a lifetime warranty and are fairly easy to work with.

If you have multiple modules of the same RAM installed, you will want to send the RAM modules back as a pair. With something like a Post-it note, mark the defective module, then package up the pair as per the RMA requirements. The reason for this is, RAM has very small tolerances, and the faster the RAM, the tighter the tolerances. To run two sticks or more together, they need to be as close as possible, so most factories take modules from the same batch and pair them together in groups of 2 or 4. They will make sure you get a closely matched pair back from your RMA, if you send a matched pair.

Anyhow, hope this helps some.

If you are receiving memory errors, those must be corrected before you expect anything at all to run correctly on the computer. Since you have no control over which memory addresses that software you are trying to run will be assigned to, and you know your memory is returning bad results, you must sort those out, or nothing we can do in software is going to help.

It makes sense that you would be unable to correctly and successfully copy files for games, if the memory you are using to copy the files with is returning bad results.

Any copied data should be verified to be correct, and this likely won't be something you can do until you can run memory testers without returning errors.

You said you removed 1 stick of memory and still received errors? Pardon my misunderstanding, but when running a single stick of memory, you want to re-run the memory test. If you get errors, pull out the single stick, replace it with the other, and test again. If every memory module you test, even by itself, is returning errors, you have either a bad setting that is causing your motherboard to run the memory incorrectly, a bad memory slot, or a bad memory controller. It's unlikely, but unfortunately also possible that every stick is defective. If they all test bad, the first thing to assume is something else could be the culprit. Memory is generally very reliable unless mishandled.

I can't really speak to the pins you said were bent on the motherboard as I don't have enough information there. You do however need to be careful when straightening anything that you do not stress the solder points and lands on the back of your motherboard so they do not crack or detach. That could certainly cause problems.

You can test the same stick of memory in different slots, if you suspect the memory slot on the motherboard is causing the errors.

The memory controller on most modern systems is integrated into the processor, so the likelihood of that being the issue is fairly low. The only way to isolate that would be to swap in a different CPU.

You haven't yet mentioned any results from looking at your memory timings with CPU-Z.

My recommendation is to test each stick of memory individually, in multiple sockets on the motherboard, and if they all return consistently bad results, focus on the settings for the memory in BIOS. CPU-Z can read the SPD on the memory modules and tell you what they are intended to be running at, and it will also list the current settings that are being applied to them. These settings, if incorrect, can easily cause bad data to spit out of the memory. There is also a concern about voltage being applied to the RAM, either too much or too little, and even to a lesser extent, the ambient temperature in which the memory is being made to operate.