Dear All, Greetings! Today, I went inside BIOS, there I set up BIOS Password and Power On Password on my HP 541 Notebook, as I did not intend to protect BIOS with Password, I just needed to protect just OS password which is called in HP as Power on Password. I tried to remove BIOS system Password but could not do so. Therefore I clicked on DEFAULT CONFIGURATION in BIOS. From that point, Start the OS it tries to load but immidiatedly it takes to a black screen which says 1. START WINDOW NORMALLY, 2. LAST KNOWN CONFIGURATION..choosing either takes me back to restart point of OS. Before this bios setting , my computer was ok..may be bios configuration went wrong and I don't find any optimal configuration in HP 541 Notebook. I am desparate to fix this error..YOUR HELP WOULD BE HIGHLY APPRECIATED.. Samuel