If your new hard drive is blank and hasn't been formatted yet, you may need to run the Acer hard disk preparation program before you can use the e-recovery cds. See Acer's website explanation here: http://acer.custhelp.com/app/answers/detail/a_id/1405/kw/blank%20hard%20drive/session/L3RpbWUvMTMyMTIyNDA2OS9zaWQvNHBveTgySms%3D
Basically, you download the iso image file from their website ( http://support.acer.com/acerpanam/manuals/acer/0000/documents/Format%20CD.iso
), then burn it to cd (maybe you can use a friend's cd burner if yours isn't working at present), then insert the cd into your computer and boot from it, and it prepares your blank hard disk for you (just follow the on-screen directions). Then once that's done you can try the e-recovery cds again and it should work.