Why I cannot put my HDD back after a clean install of win8 on mSATA?---Dell Inspiron 14 7437

Dell Inspiron 14 7437

I took off the HDD and made a clean install of win8 on my mSATA
But I found I cannot put my 500GB HDD back to the laptop
The screen showed no operation system can be found

In BIOS, it was set for using second hard drive (mSATA) for boot

I don't know why when I put the HDD back it cannot start from mSATA

the HDD was cleaned by using diskpart, and there is only one primary partition, and inactive

please help me on this. Thanks!