NASA fixes Hubble gyroscope by turning it off and on again
Hubble’s designers prepared for gyroscope failure by equipping the observatory with a backup.
Unfortunately, when one of Hubble’s gyroscopes conked out in early October, the backup didn’t work as expected –
– it was rotating too fast and hence won’t be able to hold the telescope in place when it needs to stay still and lock in on a target.
https://www.engadget.com/amp/2018/10/24/nasa-hubble-gyroscope-fix/
NASA Fixed Hubble the Same Way You Fix Your Computer
https://www.popularmechanics.co.za/science/nasa-fixed-hubble-way-fix-computer/