Sir ye jo apne video post ki hai. Mera laptop bhi same modal hai. Mere laptop me phle window 8 chal rhi thi. To maine laptop me window 10 krni chahi. Lekin ab jab mai window install kr rha hu to bios me hard disk show hi nhi ho rhi hai. Or phle wali window bhi nhi chal rhi hai hai. Operating system not found aa rha hai ab. Pleas help me . Reply fast.