As far as your question, you should read here:
http://www.tonymacx86.com/laptop-compatibility/106791-laptop-compatibility.html
Also,
Please provide complete details
in your profile/signature
(Profile/Settings link in upper right corner of this site)
System: manufacturer/model
CPU: detailed CPU model + motherboard chipset
Graphics: all graphics devices + laptop internal screen resolution
For example, typical Ivy laptop:
System: HP ProBook 4540s
CPU: i5-3320m/HM76
Graphics: HD4000, 1366x768
Use CPU-Z on Windows to find CPU (Core iX-xxx) and motherboard chipset (HMxx), and graphics capabilities. For a laptop, these details are important and affect critical installation procedures.