Windows 7 - Will my PC hold this much ram?

Ok so Intel website says this
Max Memory Size
(dependent on memory type)
32 GBMemory Types
DDR3-1066/1333# of Memory Channels
2Max Memory Bandwidth
21 GB/sECC Memory Supported
No
And ive currently got 2.0gb of ram (see specs) and went and bought some more ram
2x2gb DDR3-1600
1x4gb DDR3-1333
My motherboard has 4 slots btw

So if I go install it will my computer run with 10gb of ram?

It depends on whether the differing types of RAM will work together try it and see, maybe adding one stick at a time so you know which one to remove if it does not work
Consult the MB manual to see where and how to place the RAM

1) As your spec's state mobo is MSI, check on the web site.( not intel)
2) As you are mixing ram, mismatched ram can BSOD.

I have highlighted the ram I can see that could give you an issue.

Damn not the BSOD

Language Mate

DDR3 Memory DDR3 1066/1333 On motherboard
DDR3 Memory DDR3 1066/1333 On CPU

So 1600 DDR3 as a waste?

While memory can run at a lower rate, it doesnt mean it will be stable. Its best to run ram in kits so that the sticks have been tested to run together.

If you plan on overclocking probably not depending on what you dividers/bclk you use.
Otherwise you will be wasting the extra speed as it will be running underclocked which may or may not be an issue.

Your motherboard supports dual channel Matched memory so you could probably max that with 16gb by using all 4 slots with 4x4gb sticks all the same Ram i.e all G Skill/Corsair/Mushkin.

Check your motherboard's QVL for makes of Ram that will work on your board..also check updated BIOS's as MSI may have modified it to work with differnts brands/higher Ram speeds etc.

cheers