Is this a good shop? If so then there is likely not much we can do.
Why did you change all these components anyway? Did you have a problem?
Is this a store bought computer? If so what was the original OS?
You have tried to load Vista 64 bit, Vista 32 bit and XP 32 bit. Which versions of those three? Home basic, premium, Ultimate, Pro etc?
Where did you get these versions and have they been installed on any other computers?