RE: 5855 tablet lost auto rotation
Kindly try the following steps :
To turn on, or turn off screen rotation, swipe in from the right, select PC Settings and look for the Screen icon. Tap the Screen icon and you will see a vertical slide control for brightness. At the top of the brightness control you will see a rectangle, representing a screen, with a curved arrow at the lower right corner. Tap the rectangle once to lock the screen rotation in the current position, portrait or landscape. The curved arrow will change to a lock. To unlock screen rotation, follow the same procedure, tap the rectangle with the lock and it will change back to the curved arrow.
Please update drivers and check if issue persists. If the button has disappeared and issue is not resolved after updating driver, reset the operating system after backing up data. Confirm if this helps.
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