DL3 2008 HDD to SSD swap.

Hello!
So, as you might now, HDDs are pretty hot (especially in device like this) and pretty fragile.
I want to swap from HDD to Intel 335 240gb SSD but I have one problem.
I was able to install software on SSD but after I restarted my DL3- only thing which shown up was an error message.
Has anyone had previous experience with SSD swap?
Is this a compatibility problem or just my curve hands?

Thanks for help,
Kristaps.