I'm putting together a spare system from 'older' parts. Using AV8 & Athlon\n64 4000+.\n\nAfter putting the system together, I cleared the BIOS & during reboot get\nerror: checksum, loading defaults. Press F1 to continue. I do & the boot\ncontinues. I reboot, enter BIOS setup & set boot device, device boot order,\netc.. Press F10 to save - the system fails to reboot giving 'klaxon' like\nsound (long high pitch, short low pitch). Post code showing in LED is 9.0.\nPower off & restart - same stuff. Clearing the BIOS just repeats the above\nsequence. Hoping against hope, I did flash the BIOS to 2.7, cleared it,\nrestarted. Same sequence as above after the flash.\n\nAny ideas as to likely problem? BIOS chip? Battery? motherboard? processor?\n\nAppreciate any thoughts / suggestions.