->When laptop boot up its hung f2 to BIOS & F12 Boot order Menu.
->Even unable to enter the BIOS setup & boot order menu..
-> I have tried BIOS recovery option , its entry the recovery mode & reading the USB drive.
-> I got beep sounds every few SEC's( one beep & two continuous beeps)
-> I'm trying to run Mac Snow Leopard OS
SAM M471B5673FH0-CF8 DDR3 1066 2GBRAM
Intel ARD 2.53G 3M K0 I5-460M VGA CPU
You need to restore your disk as comes from factory. If you created recovery DVD's you can use these, or if you have not wiped out the hidden system partition, you can power off and press the 'novo' button to boot to the hidden partition and follow the steps to restore to factory condition. Note, this will wipe all data.
To install from recovery disks, you need to connect the disk using an USB interface or using another computer.
Note: Only properly licensed copies of an OS should be used.