BTW, if you just bought it, and it is doing this... I would be taking it back and getting my money back.
Causes of this Error...
1. Incorrect boot order.
2. Partition not set as active.
3. Hard disk failure.
Fixing “Reboot and select proper Boot Device” on Windows
NOTE: Some of the solutions below require the use of the Microsoft Windows setup CD/DVD or USB.
1. Check Boot Order
The simplest fix for this error is to make sure your computer’s boot order correctly list your hard disk as the 1st option.
To check the boot order...
a. Restart your computer
b. Access your BIOS menu.
c. Go to the Boot tab.
d. Change the boot order so that your computer’s HDD is listed first.
e. Save the settings.
f. Restart your computer.
2...