# Unavailable device detected/driver not properly installed

**URL:** <https://forum.formlabs.com/t/unavailable-device-detected-driver-not-properly-installed/32311>\
**Category:** Form 3/3+\
**Created:** [October 29, 2021, 2:12am UTC](https://forum.formlabs.com/t/unavailable-device-detected-driver-not-properly-installed/32311 "2021-10-29T02:12:46Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![paulee1983](https://avatars.discourse-cdn.com/v4/letter/p/22d042/32.png) [@paulee1983](https://forum.formlabs.com/u/paulee1983)\
**Post date:** [October 29, 2021, 2:12am UTC](https://forum.formlabs.com/t/unavailable-device-detected-driver-not-properly-installed/32311/1 "2021-10-29T02:12:46Z")

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Trying to use Form 3B with non-network desktop via USB, but keep getting “unavailable device detected” error in PreForm software (see attached photos). Software and firmware are updated. Window OS is windows 7 64bit. The printer can connect to another laptop via USB. Apparently there is some issue with the software of the desktop but I cannot figure out why. Any ideas?

 ![image](https://us1.discourse-cdn.com/flex025/uploads/formlabs/original/3X/4/9/492134d56add6e4bc12f2c4b9bb5fa0c9372ae19.jpeg)

 ![image](https://us1.discourse-cdn.com/flex025/uploads/formlabs/original/3X/0/6/06b0fbc58bf96de8932b4d30e9e26b06463b0183.jpeg)

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**Author:** ![rybu](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/rybu/32/14917_2.png) [@rybu](https://forum.formlabs.com/u/rybu)\
**Post date:** [October 31, 2021, 9:04pm UTC](https://forum.formlabs.com/t/unavailable-device-detected-driver-not-properly-installed/32311/2 "2021-10-31T21:04:05Z")

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Maybe try a different USB cable, or a different USB port?