Capitalizing The First Letter Of Every Word In A Cell, Without Changing Anything Else

What I need to do is fairly simple to explain:

I want to have the first letter of every word in a cell to be capitalized, but the rest of each word must remain as is.

Ie: If I have "My AMD CPU still has some pew-pew" in a cell, I want to be able to use a function, let's say:

=CapFix("My AMD CPU still has some pew-pew")

and the output should be:

My AMD CPU Still Has Some Pew-pew

I've tried using:

=PROPER("My AMD CPU still has some pew-pew")

But the output is:

My Amd Cpu Still Has Some Pew-pew

Which is incorrect (capitalization in the rest of the words "AMD" and "CPU" is lost). Does anybody here know what can be done to solve this problem, or have any info about what I can use to solve it? I have not been able to find any built-in Excel function to solve this, nor ASAP Utilities and I can add VBA code and macros, I just don't know how to manipulate the strings correctly or do the loops, etc that I think will be necessary to solve this.

If anyone could help, it would be much appreciated. I've not seen a single site where a similar problem has been posted. Even if you can't give me a full solution, but can point me in any direction that would be useful, I'd be really grateful.