motherboard doesnot read hard disk?

Check the jumpers at the back of the drive.
If it's the only drive, there should be NO jumpers set, but it probably share the cable with the CD or DVD drive.

With 2 drives, it must be set as "Cable sellect" or "Master", but, if the other drive is a CD or DVD, set it as "Cable sellect" or "Slave".
Prefered: Set BOTH drives as "Cable sellect".
If one is set as master, the other must be set as slave.

The jumper position should appear on the drive label. Different brands don't have the same setup.

If properly setting the jumper don't solve the isue, check that the power and ribon cables are properly connected.

Open the BIOS setup when powering up the computer.
Use the auto-detect to identify the new drive. You need to navigate the pages to find the correct one.
DON'T change anything else!
Save and exit the BIOS.

Once the drive is recognised, in the operating system, format it and it's ready to use.

If everything fails:
You may have a deffective drive. As it's a new one, have it replaced under waranty.

Electro
April 2013