Please help! UNMOUNTABLE_BOOT_VOLUME

[Broni]

Just try 1st option, "Write image file to disc".

Also, how do I disable network booting? I cannot see an option for this. 

What options are listed?

[Roberto172]

In the boot order section of the setup menu, there is only the option to move it up or down the list, should I put it right to the bottom of the list so the network boots last?

[Broni]

Exactly.

[Roberto172]

Okay, I have burned the file to my USB flash drive, but now I have another problem. After the ACER logo has appeared at startup, the screen goes black with the little cursor in the top and stays like that. I am sure this is something to do with the flash drive or the program on it. What do I do to prevent this?

[Broni]

Is external USB listed first in BIOS boot order?

[Roberto172]

Yes

[Broni]

I believe, that blinking cursor happens because for some reason USB stick is not bootable.
Is this netbook under warranty?

[Roberto172]

I think it is. Will it work if I use another USB flash drive or a different USB port?

[Broni]

I'd contact Acer then.

[Roberto172]

Ah ok will do. Thank you for your help anyway

[Roberto172]

Oh and, my acer has that e recovery system. there is the option to restore the computer and reinstall windows, but it'll delete everything off the C drive. I'm not sure if there is a partition in the hard disk but is there a way of keeping everything on the C Drive? Like using a flash drive?

[Broni]

If the hard drive can be accessed, you can slave the drive in another computer (or use USB hard drive enclosure) to save your data.