DON'T TAKE APART WHILE PLUGGED IN!!
Step 1: Open the Computer
Next, remove the 2 screws, (marked on the picture below) and remove that panel.
Step 2: Inside of Computer
If you turn on your computer and it doesn't keep track of time properly and asks you for the time, then this battery is what should be replaced. In most computers I've seen though, it is usually a button cell lithium not AA style lithium battery. It can be removed by pulling the wire/wire connector of of the hookup on the motherboard that's underneath the metal plate where the crew was.
If you want to dig even deeper into the computer then remove the 3 screws holding the monitor section in place.
Step 3: Beneath the Screen
After you got that done, you'll see a metal frame surrounding the floppy drive and hard drive. I tried to remove it but because there are screws on both sides of the frame, and in positions where they couldn't easily be accessed because of the screen, I just left it there.
Step 4: Final Step!!!!
The specifications of my computer is: 12mhz/6mhz processor, 1MB RAM, 600*400 resolution 4 colour plasma screen, 20MB HDD, HD FDD (1.44mb), MS DOS 5.
Originally, you could buy it with a 40mb HDD instead of 20, but it would obviously cost more money, and at the time these computers were expensive, and it usually came with 720kb FDD instead, and with either MS DOS 3 or 4. You could also buy extra externally mounted devices that attach to the back like and extra HDD, or 51/4" FDD, or like in mine, a modem, and many others. So far, my fav. DOS game is Street Rod 2, next to blood, but Blood won't even run on this computer because of it's high requirements for the time.
PS. I bought this computer at value village if you wonder where I got it.
Thanks for reading my first Instructable. Also if you like taking electronics apart and/or modifying them then feel free to join my group called disassembled electronics.