So I installed my second SSD...

[Sythern]

It doesn't appear in disk managment or on my computer tab. All of a sudden while I'm playing a game it tabs me out and says "installing driver device" and my anti virus starts scanning my new G Drive which is my new ssd, it then looks as if its all working. The ssd appears in my disk managment as G Drive and I start getting happy, so I shut down my pc to be sure it will not vanish again.

So what does it do? It vanishes 🙁 Why do you think this happened?

 

[Tide]

I'd probably start by checking the cable connections. This sounds like it could be a loose cable (or a cable not seated completely.) Check both the sata cable and the power connection as either might cause this problem. If you have another computer to test with, you could try installing it in that computer to see if the problem persists. If so, it might be a bad SSD (rare though that it'd be that if it's new.)