SVS1511C5E doesn't find new SSD

[mardo.]

Hello!
I decided to change old HDD 680GB into SSD 1TB on Sony Vaio SVS1511C5E. Cloned it, replaced and when turned on the pc it shows black screen with "Operating System Not Found".
Not sure is the problem in BIOS or what... 
Tried to replace new 1TB SSD with smaller 500GB SSD(from another pc, also old VAIO) and Windows turned on, but just ONCE!!! 
What's the problem with this SVS1511C5E?!
Anybody! Help!

[Peter_S.]

Hi,

Probably the SSD isn't compatible with your PC.

Please check if it's recognized in the BIOS.

Cheers

Peter