Windows 7: Can't start up.. please help.

Hello everyone! got a samsung laptop quadcore processor 500G hard drive 4GRAM.. 8months old..

i already load the system recovery media into the cd/dvd rom. nothing's happen. did not start up for 12hours.. what should i do? please help.. thank you so much!

It would be useful to know the model number of the laptop and a description of what happens when you try to boot.
Like is there no display and the screen stays blank, is there the sound of the drives\fans operating ? Are there any beeps from the Bios chip ?

If it's a complete refusal to do anything (and on the assumption you check power is ok) you can, depending on the model, try to reset the Bios using combination keystrokes whilst pressing the power button.

the model is 300e4a/300e5a/300e7a/305e4a/305e5a/305e7a that's what ive found on my user guide book. sorry..

the screen was just the logo of windows 7 when i turn the power on.. no sounds, please help.. thank much!

i already load the system recovery media.. now the screen display is "SYSTEM RECOVERY OPTION" when i click the :system restore" nothings happened.. should i wait to response? thanks!