the probability is queit high that you will have to re-enter the important bios details.
If you are losing the time and date, then these should be back to default already.
The main ones to change are just the cpu and memory.
Fujitsu Lifebook P727 laptop review
Best of the Grad Shows 2017: University of the West of England (UWE)
Best value Mac: Which is the best £1249 Mac to buy
Les meilleures GoPro 2017