I think I might have bricked the computer while trying to boot it from a USB stick.
I had Windows 7 and Ubuntu 12.04 installed, and the computer (Samsung NP550P5C) had come with preinstalled Windows 8. I clean installed Windows 7 by changing the boot option from UEFI to CMS OS.
Yesterday I was trying to reinstall Ubuntu but this time through a USB stick, and CMS boot option could not recognize the USB so I changed the option back to UEFI.
Ever since then, I cannot even go into BIOS options to change it back to CMS OS but I can see the Samsung logo after powerup,and black screen after that.
Does this mean that it is bricked?
Is there any other way of fixing it other than sending it to Samsung for motherboard replacement?
Note: I know this might not be the best place to ask such a question, but it is all I could think of at the moment.
Edit: Forgot to add that when I see the Samsung logo, the usual F2 and F4 options do not show there, if they did, I could just switch back to CSM and all would be well (I guess).