China4Ever, thanks. I tried this exactly: flash with your bios, clear cmos (pull plug, set cmos jumper, wait 10 minutes), boot, hit DEL to enter bios (before checksum error comes), and then load fail-safe defaults. On reboot, I still get the same checksum error and F1 and DEL keys are frozen. I don't think it's saving any changes to the bios. Anything else to try? . Where does this checksum error come from? Thanks for your help!
Thx China4ever My Notebook still error boot!, The Bios can detect all equipments when I went to bios setup. But it can not boot fromany device, HD CD/DVD or any USB device. Anyway THX to help me to MOD BIOS, I will go to service center in a few day. Many thank, gizmoz9