Diskette drive 0 seek failure appears after I changed my cmos battery
Changing the CMOS battery, while necessary, has reset your BIOS to the factory set up. Which means, from your description, that your PC is looking for the operating system on your CD or Floppy drive.
When booting, you should see, at the bottom of the screen, Press F2 for setup or F10 for boot options. They may be different F numbers, but the options should be the same.
Choosing "Setup" means that you'll be permanently changing the BIOS, "Boot Options" will be limited and temporary. You can choose the boot options, get you used to the idea of editing the BIOS, but you will need to update it if you don't want to go through this procedure every time you want access to your PC.
For my part, select the "Setup" option.
Look at the right hand side of the screen, it tells you how to edit the BIOS.
Tab across to "Boot Options" and from the list shown, arrow up/down to "boot device order" or an options with a similar wording.
You now have to set the boot device order, this tells you where your PC is to look for an operating system and there's usually about 4 options.
set to :-
1st boot device - CD drive.
2nd boot device - HDD 0
3rd boot device - external
after this really doesn't matter too much.
This means when booting your pc will look for a CD with operating system first, then your hard drive, finally an external boot system ie usb connected device.
Once your device order is set, hit exit or F10, you will be asked if you want to save the new setting to the BIOS, if you're happy hit Y if not N.
Once complete, your PC should boot normally.
You may want to go back to your BIOS and set up other options, just remember, on exit on select Y to save if you're absolutely sure you got it set correctly.
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