iPhone restore not finish iPhone 4S

Hello there,

So I'll make it simple. My iPhone 4S was working fine, no problems until my phone just reset itself. When it finished rebooting, the "Connect to iTunes" logo appeared on my phone, and when I plugged it into my Mac, it told me that my device was in recovery mode and needed to be restored. So I pressed restore, and after a couple mins, the bar just stopped. like 3/4 of the way. I worried a little bit because it happened to me once already and I had my iPhone 4S replaced and I don't know if I can get it replaced again...So please help me? Is there any way to fix this or what should I do?

I have an iPhone 4S 16 GB, White, on Verizon network, and no it's not jailbroken