Hi Uniquelatino,
Thanks for the detailed screenshots.
Unfortunately, not sure what is causing problems to load the bios defaults or run Easy Flash, so you may also want to consider contacting your store (if local?) or local ASUS support at the link below too.
It looks like there is a number for the Dominican Republic if you're interested.
http://www.asus.com/ar/support/CallUs/Otherwise, we can try to troubleshoot more if you're interested, but not sure how far we can get in solving this problem.
1. Can you please press the 'F12' key while you are in the 'Main' area of the bios to see if it lists the X551CA or X551CAP model in the bottom right-hand corner?
2. Can you please check under the 'Advanced' area of the bios under 'Sata Configuration' to check if it lists your hard drive and/or DVD-rom (sounds like you reported they were detected? already)?
Are you using IDE or AHCI for the Sata Mode selection and are you still using the original ASUS Win8 image?
3. Just curious how long you have had the notebook and if you changed anything before this problem started (install a different operating system, etc.)?
4. Did you upgrade any components, or have any other devices plugged in (try unplugging anything you don't need)?
Thanks.