This information pertains to LabQuest 2.

If you have a LabQuest 3, see this article.
If you have an original LabQuest, see this article.

If your LabQuest 2 partially turns on but doesn’t load the LabQuest 2 app all the way, it is possible to recover the unit with a special SD drive.

The special SD card cannot fix hardware or power problems. So, if you have problems getting a LabQuest 2 unit to turn on in general, the best place to start is I have trouble getting my LabQuest 2 to turn on/start up. (flowchart)

The special SD card can fix software corruption problems that can’t be fixed with LabQuest 2 software corruption recovery instructions. In particular, it can fix
–units that start up at least part way, regardless of whether or not they are running version 2.0-2.3.3 or 2.4 or newer.
–certain types of corruption that the USB drive can’t.

Note: This SD card is very difficult to create. If you need one, contact Vernier Technical Support and we will send one to you.

To use the SD card
1. Turn LabQuest 2 off (remove the battery/AC power if you can’t get it to turn off).
2. Put the SD card in the SD card slot on the top-right of the device (under the protective flap).
3. Plug the LabQuest into AC power (if it isn’t already) and reinsert the battery if you removed it.
4. Turn LabQuest 2 on.
5. Watch the scrolling text for a few minutes. When it is done, LabQuest 2 may instruct you to press the power button to turn it off, or it may turn off automatically.
6. Remove the SD card.
7. Turn LabQuest 2 on.
If everything went well, it will prompt you to calibrate the screen.

The SD cards will put an older version of the software on the LabQuest 2. After finishing with the above process, update the device normally by following the instructions at:

Do not connect the SD card to a Windows computer. If you do plug the SD drive into a Windows computer, Windows will advise that the disk is corrupted and offer to “fix” it for you. Select no.