Hi Sebastian
very likely this is an used unit…and nobody can possibly know about the conditions it went thru in its honorable career. Which OS version it's running on? At boot time you'll see 2 numbers reported for boot rom and OS version. It may also require reinstalling the latest OS. Also a new internal batttery may be needed. This doesn't really depend on the amount of working hours reported in your next email. Changing it would be wise as we don't know……
Hopefully it's not a hardware problem, which would require the unit to come back at the factory…in which case would be very wise considering to upgrade it to H8000FW.
all the best
I
