The restore from HDD or partition is breakable so you must create restore media. No problem if you forget. Head to hp.com and order them.
I tried to install linux mint on my friend's HP g6 and it didn't work. So we decided to install windows 7 back from rocovery partition but it stucks on the same restarting step.
Before installation there was 4 partitions. One for windows7, one for recovery, one for hp tools and another little one about 300mb for something that we dont know. I deleted windows7 partition and installed linux there. But i think that little partition also deleted while others remained same.
How can we install Windows 7 again?