Sony Vaio Laptop "Operating system not found" Please help!


May 22, 2016
i everyone! Recently I turned on my laptop and when the laptop is turning on I get a black screen saying operating system not found. I had windows 10 on the machine. I've tried rebooting and using the assist button but I get the same screen. I was able to get to the 'setup utility screen" by pressing f2, I tried to reset the bios but nothing changed, in the setup utility screen it says : Hard Disk Drive : None. With the hdd is in the laptop. I tried a different hard drive and it worked on the laptop. Does this mean the original hdd is broken? Is there anything I can do? Please help me, I can't afford to get it fixed. Thanks p.s the model is Sony vaio vpcee34fx