Easy to try and replace battery.. ??..... or make sure all hardware is seated properly. Go into bios and load optimized defaults. Make sure all hardware is seen. Look for and undo anything that is not connected/running. IE: floppy, etc. Check voltages save and reboot... what happens ???? I can't remember if "IDE" is on in my machines anymore. Too lazy to reboot and check. ( SATA ) HD 1st boot device.