New HDD detected as external HDD but not as internal in dell inspiron

Hi
Recently my windows 7 get into startup repair loop and I decided to buy a new internal HDD and install it to my laptop and keep the other as external.
When I installed the new my laptop didn't recognize it. I put in the case and initialized and it was recognized. But then I use aomei to clone the partition of the OS to the new drive because I lost my recovery disk. Now my laptop don't recognize my disk again. I took the disk and put in the case and format it in my other laptop (is visible when I connect it as external disk) but if I put inside the laptop still isn't recognized. I format in 512 because I find it solved the problem to other person but didn't work. The mother board is Ok because it recognize the old hard drive. Can you help me please?

Use diskpartto totally erase it it likley as you cloned that it has the same disk signature as the one installed and giving widows a head ache. take great care with disk part How to Diskpart Erase/Clean a Drive Through the Command Prompt

samuria said:

Use diskpartto totally erase it it likley as you cloned that it has the same disk signature as the one installed and giving widows a head ache. take great care with disk part How to Diskpart Erase/Clean a Drive Through the Command Prompt

? what's the "disk signature"?

(if it's data then how big is it? and where's it stored physically? (in the MBR?))

Hi,
I do what Samurai suggested and also the disk isn't inserted properly on the space. It hasn't resistance when I inserted. Problem solved! Thanks Samurai.

When a he is inserted windows writes a signature to it so it know what it is and can assign a drive letter etc if you clone a drive you have two disk the same and windows can get a headache

For future reference, try doing an image backup rather than a clone, then restore the image to the new drive. I believe you would have better success with an image backup than with a clone.