Hi All, I'm a PC tech and just started with MAC. The short version: Macbook Unibody Mid 2010 - removed working HDD (El Capitan installed) Installed SSD (Samsung 128GB) - Fresh out of the box Booted pressing CMD (the square with the circles at the corners) + R Get a grey folder with a question mark in it. I've made a Sierra USB flash boot installer using Make Boot Disk (I think that's what is was called) using my other mac USB flash drive is 128GB - Build went ok no errors Connected the USB stick. Held down CMD + R - Get grey folder with flashing question mark Also tried booting holding ATL + CMD = grey folder with question mark also tried booting holding only ATL = I get a white screen with a mouse point also tried the PRAM reset (CMD + ALT + P + R). It cycles a couple of times then re-tried the above = Still no result. Do I need to get a OSX install DVD and boot from that. I appreciate the CMD + R is probably not working as that runs from the recovery partition on the HDD, which I removed. Also I don't think this model (due to it's age) has the Internet Recovery Option. Only other thing I can think of is to clone the HDD to the SSD (I have a dedicated hardware unit to do that) then once up upgrade to Sierra. I'm not hung up on Sierra, I just want a fresh OSX install to the SSD, even if it's El Capitan. Help would be greatly appreciated. Thank you! Leigh.