Hello!
I've got a hp dv7 2110 sf (it's the same but an other country keyboard I think)
You see mozaic on grey wallpaper it's because your graphic card (ati mobility radeon HD4530 is not supported)
Follow these step:
Install with iatkos (v7 for me)
choose the same drivers but NO VGA
then at the end it reboot because the installation is a sucsess
Boot again on your iatkos DVD in safe mode (press F8 and type -x-s),
open the terminal in the utility,and type...
Code:
cd /Volumes/*nameofyourvolume*/System/library/Extension/
Code:
rm -rf ATIRadeon.kext
rm -rf ATIRadeon8500.kext
rm -rf ATIRadeon9700.kext
rm -rf ATIRadeonx1000.kext
rm -rf ATIRadeonX2000.kext
rm -rf ATIRNDRV.kext
rm -rf ATINDRV.kext
Press enter at each end of line
*Warning* if your volume partition has a space in it, it won't work eg: "MAC OS X" not good ^^
Then reboot and it's work!
NB: for the audio don't choose anyone either, you will install a kext after for that
PS: To have a better resolution install this kext with osx86 utility Board Message
thx to Dong for the kext
And let me know if it works!! 
See you
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