Acer apire 5920g won't boot

let me say first hi to all of you since this is my first post it's great to be hear and now my BIG problem
i have an acer 5920g and when i decide to install win 8 form win 7 i decide to format my hdd with
paragon partition manager all went well and i begin to install win 8 or i thought i would
PXE-E61 : Media test failure, check cable
PXE-M0F: Exiting PXE ROM
operating system not found
this was the first message i check the dvdrom maybe it has some problem so i decide to make a usb stick
with the os change the boot priority same thing it stuck to this screen

then i replace the ram same result as a finall solution i asked a friend of mine that we had buy the same laptops
to bring his acer and i use a different hdd as a precaution maybe my old one had a problem and removed my friends
hdd and install win 8 to his acer 5920g by the way whn i power up my friends acer 5920g the same message appeared
PXE-E61 : Media test failure, check cable
PXE-M0F: Exiting PXE ROM
operating system not found
but almost immediately when i press any key the iintallation of win 8 began and finished
then i take the hdd with the fresh installed windows 8 and put it back to my acer and same thing same screen stuck there

so any suggestion any solution in how to raise my acer 5920g back from the dead will be much appreciate it
please excuse me for my bad english.

 

Ive got the same machine and trust me , u dont want windows 8. sucks. Have u tried going back to a reinstall of win 7? I couldnt install any nvidia driver running windows 8. Went back

 

If you want to have an OS thats got all apps like win8 try Android x86. runs smokin fast and can do almost anything a tablet can minus the gps ans accelorometer.