M'Board first.
The most likely thing is a flat battery on the M'Board for the BIOS the most current generations of M'Boards since the Pentium have had coin sized batteries of the Lithium variety which when they go flat cause all sorts of problems that almost always result in a failure to boot. The answer here is to fit a replacement battery should be around a $1.00 in most battery supply places and should be this code CR2032 though that's a Generic Marking as different makers may have a different designation or number but they are all of that type. Just make sure that you have removed the mains lead before attempting to change the battery or you could kill the M'Board.
Once you have a new battery fitted you should get a Load Error when you first boot here you should go into BIOS and set the Date & Time and the HDD to Auto and then save & exit and it should boot normally if the M'Board isn't dead.
As for Tech Points when you join TR you are issued with 1,000 and for every question that you close you get another 1,000 so it's TR way of getting people to close off asked questions without causing problems for the people asking questions it's just an added incentive to do the right thing.
Col