Laptop won't get past the loading screen

Hi there, my laptop will not get past the loading screen on normal mode. I am using a HP Pavilion dv6 Notebook PC which I have had for 3 months and it is a second hand laptop. Last night it was working fine but when I tried to turn it on this morning it gave me a blue error screen and now it gets stuck on the loading screen. I am currently on Safe Mode with Networking on the same laptop. I didn't see what the error code was on the blue screen.

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