Cannot install OSX it takes over 200 hours
I was trying to factory reset my MacBook pro [mid 2010], but when I try to reinstall OSX it just takes over 200 hours and growing, I've added a picture that shows over 100 hours but in the meanwhile the time estimation had been growing over 200 hours and almost over 300.... I have no idea what to do I was trying to restart the installation about 5 times already.
I tried disk first aid and the result came up ok.
I was also searching all over the internet with no solution found.
please help
thanks
MacBook Pro, OS X Yosemite (10.10.3)