When i start my lapt top i get black screen that reads intel undi,pxe-2.1 (build 082) for real tek rtl8101e/8102e pci-e enthernet controller v1.07 (080320)pxe-e61 media test failure,check cable pxe-mof exiting pxe rom no bootable device insert boot disc and press any key

If the sound you are referring to is a clicking sound, then it is a hard drive failure.
Your computer is trying to boot up the operating system from the hard drive, but when it fails to access the hard drive, it tries to boot up from other devices configured on the BIOS. Apparently, your next choice for booting the operating system is set to the LAN card. Hence, you get the message "PXE-E61 Media test failure", which means that the computer tried to boot up the operating system over the network but it found out that your network cable is not connected to your computer's network interface card.