2F8 is the memory address commonly used by serial port 2 (COM2), so I would go into the BIOS and check your COM port settings...If you have 2 COM ports make sure COM1 is 3F8/IRQ4 and COM2 is 2F8/IRQ3, and the part about detect IDE makes no sense in relation to 2F8, but if your BIOS has an IDE detection option built-in (and most do), I would have it rescan/redetect your IDE devices then save and exit if the detection is successful. If all of that fails I would check your motherboard manufacturer's website for a BIOS update or any mention of the error you are receiving. It may also be worth changing the CMOS battery if that is an option.
Good luck...
Jeff
MCSE,CCNA,ASE