I changed recently my HDD to SSD Samsung 850 EVO.
I reinstalled new Windows copy and all drivers from Dell website (starting by Chipset).
90% of time boot is takes 40sec but 10% of time it takes 2min.
I checked ntbtlog, and saw a lot of occurence of errors,
Did not load driver @nettun.inf,%isatap.displayname%;Microsoft ISATAP Adapter
Did not load driver @battery.inf,%*compbatt.devicedesc%;Microsoft Composite Battery
Did not load driver @netrasa.inf,%mp-pptp-dispname%;WAN Miniport (PPTP)
And many more,
What this could be,
Any suggestions ?