Aspire One N214 Model # ZG5 keeps showing me a Acer screen before informing me that I have a Media test failure and that it has no bootable device. I have no boot disk it asks for, Please help me!

Definitely a hard drive failure, pull the hardrive out if its no longer under warranty(the pc) and you can get hard drive tested kits that allow you to hook up the hard drive to a working pc and test the hard drive for errors, some are so fried they wont even read. The chirping sounds sounds worst case scenario. But it is deffinately a hard drive failure.

#1. Verify there are no disks in the floppy or CD drive.

#2. Get into the BIOS and set everything to default.

#3. Have a friend create a boot disk for you or, if you have a program that is self booting, use that to get in.(i.e. Windows)

your wire to hard drive is loose replace wire the wire pluged in mane back for it to plug up to tower.

Hello:
Your Acer laptop is not detecting a bootable device, for sure your hard disk is:
1.- Malfunctioning and has lost its master boot record.
2.- It can be ruined and must be replaced.

In the first case, primary and recovery partition are bad, as you mention the recovery process failed (ctrl +F11). First, press F2 during POST, when "a enter Setup message" is prompted on the bottom of screen to check if the hard disk is listed on the Main BIOS properties. If detected, the hard disk can be recovered booting from DVD-ROM. In the BIOS setup utility, you need to select boot from de DVD-RW. Insert Windows 7 setup disk and it will check for possible boot errors, choose repair when prompted. Follow the instructions. The system will restart.
If the hard disk was not detected in BIOS properties, you should ask Acer for guarantee.
You may review this link for further information: http://www.acerlaptoprepairs.info/aspire-5534/
I hope this helps. Thanks

how do i remove the keyboard on my acer aspire one ,Model No.ZG5?

You can reset the Device to original Factory settings by performing the following step:

Reboot your system
As soon as you see the Acer logo, hold the Alt key and start tapping the F10 key.
It will give you a recovery screen and you would be able to perform various recovery process which includes restoring the system to original factory settings. If you restore the system to Factory settings all the data in your computer will be lost.

note: You will be able to access this recovery option only if you haven't changed or Formatted the Hard Drive since it was purchased.

If you need any further assistance in this regards please feel free to contact.

Thank you for choosing Fixya.

From ACER FAQs:

The Aspire One systems labeled with the model ZG5 are actually an Aspire One AOA110 or an Aspire One AOA150. Any information will be listed under AOA110 and AOA150, rather than ZG5.
The supportmodel number is located on the bottom of the netbook on a white label above the serial number. Alternatively, the support model number will be located in the BIOS which can be entered by pressing the F2 key when turning the netbook on. Once in the BIOS it will be under the Information tab to the right of Product Name

Media test failure, no bootable device error message means the hard disk has failed, therefore cannot boot up.
If reseating the hard drive doesn't fix your problem then replace the faulty drive and install Windows on the new drive to get the computer operational again.

Sounds like you wiped out the harddrive try reinstalling the os if that does not work you may ned a new harddrive