how to reboot a MacBook Pro mid - late 2009 13" whose operating system has been erased
I was updating my MacBook Pro 2009 (mid-late) 13" and it kept loading forever. I deleted the update but my MacBook froze for ever. I pressed the power button to hard shutdown since I could not do anything else. When I turning it back on it would not load. I restore rebooted and tried the bootable usb trick with no luck. I do not have the disks to reboot the system so I am lost. do I have to buy the snow leopard disks or is there a way to use my iMac late 2011 21.5" to reboot it? please help
thank you
Jlynk22
MacBook Pro 13″, OS X 10.11