Weather
The weather was unremarkable. We are told that the stop at Bagram was for fuel only, so the cargo configuration was presumably unchanged. That being so, a lashing problem or a cargo CG problem seem unlikely. If the fuel taken caused a large and for some reason unrecognised change in longitudinal CG, the loadcell on the nose leg, assumingthat it was fitted and operational, would presumably have triggered an alarm. An incorrect horizontal stabiliser setting would have triggered an alarm when the throttles were advanced to take off setting.
Actually, the weather was VERY remarkable. There had been thunderstorms over the airports earlier in the day and one was approaching the airport at the time of the crash. An hour after the crash, Bagram was getting rain and ice pellets/hail. The winds were gusty and shifting.