I have a Inspirion 15 5558,with i7, 8GB ram,1TB HDD,My average To reach the login screen was around 45 secs.
I was facing LCD issues, the technician came over and checked the LCD and pasted some stickers on i it so that it can be repaired later.
I found that its taking more than 4 minutes to reach the login screen.
When i contacted the technician he said it was an OS problem and that i should downgrade to 8 or 8.1
so if everyone can comment about their boot time it would be helpful in determining the problem.
Thank you