Dell Venue 8 Pro (3845, Late 2014) - Manual (Page 28)

28 | Troubleshooting
Problems Possible causes Possible solutions
Battery charge values
are not accurate The battery charge
values are wrong
or there is a rapid
change in the ambient
temperature. 1 Press and hold the power
button for 10 seconds
to forcefully turn off the
tablet, and force the
system to obtain a new
reference point for the
battery charge value (do
not follow the regular
Windows shutdown
process).
2 Perform a full battery
charge/discharge cycle
to recalibrate the battery
charge value by charging
the tablet until the battery
is fully charged and run
the battery power until
the tablet shuts itself
down.
Battery is fully charged
(battery charge is at
100%) but the battery‑
charging status light
is on
Battery charge jumps
from 90% to 100%
when the battery is
charging
Touchscreen problem
Problems Possible causes Possible solutions
Touchscreen responds
slowly or improperly • The screen is dirty.
• A protective cover
may prevent
the tablet from
recognizing your
inputs.
• Moisten a soft, lint‑free
cloth with either water
or a display cleaner, and
wipe the surface of the
tablet until it is clean. Do
not allow water from the
cloth to seep down to the
tablet ports or buttons.
• Remove any protective
covers from the
touchscreen.