Hi, everyone I just flashed my BIOS with a Dell SLIC 2.1 mod. I am using an Asus P4P800 Deluxe Mobo which had revisioin 1008 Bios as default. I downloaded revision 1019 from the Asus website and applied the SLIC with Andyps AMI Tool. I then used the manufacturers recommeneded way to flash the bios which is using the latest afudos.exe on an Ms-Dos Startup Floppy. I booted to the floppy after setting my bios settings to default, and used the command afudos.exe /ip4p81019.rom to flash the BIOS. Everything completed succesfully and then after I rebooted the machine it showed CMOS Checksum Bad on the test screen. It said press f1 to configure BIOS settings or F2 to load default configuration. I assumed that meant that it would reflash back to original bios so I pressed F2. Now the computer boots up to Windows 7 just fine and I dont get a CMOS Checksum Bad message anymore. Also the BIOS revision is still indeed the new one. So basically Im a little confused. What happened when I pressed F2?? Is my mobo/pc safe? What about the CMOS Checksum bad message? What happened to that? Why did I get a CMOS Checksum bad error? Could anybody explain this to me, Id really appreciate it. Thanks everyone.