My name is Ebhiniezer from dell social media and community
In response to your recent query regarding delay in start up Try the follwing steps given below
Restart the system.
At the Dell logo screen, press <F12>.
Note: Some systems do not have an F12 key, to access the boot options you have to press the <0> (zero) key at the Dell logo screen.
At the One Time Boot menu, press the <Down> arrow key to highlight Diagnostics, then press <Enter> to begin PSA.
Kindly make a note if any error codes listed and then reply back.
Thanks & Regards
Dell Social Media Responder