Setup was unable to create a new system partition (NEW SSD)

It's good to be back after a longggggggggggggg time...

Ok , so here i am trying to install windows 7 on a desktop that deserves to be displayed at some museum :)
it contains a 20 GB old IDE hard drive , around 1GB RAM and P3. Now , i faced the same situation .. tried hell lot of stuff . nothing worked ... not even diskpart.

My 6th sense told me to take off an additional USB Hard drive that i had left connected to the box (around 250 GB USB Hard Drive)... and boy it worked like a charm.

SO my suggestion is if you have already tried dispart and changing settings ion BIOS and it's still not working for you , maybe you need to think about taking off any connected USB disk drives from the box.

Till we meet ...

One thing I found was that if you set your boot priority to your USB install device being primary boot device, you will get that "Setup was unable to create a new system partition"but if you don't change the boot priority settings and instead enable F12 menu and select your installation usb device from that menu you will not get that error and your install can go ahead
Hope that helps some people.