# 6 GPUs and only 4 working - Biostar TB250-BTC and GTX1060 GB **URL:** \ **Category:** Mining\ **Created:** [July 14, 2017, 4:26pm UTC](https://forum.zcashcommunity.com/t/6-gpus-and-only-4-working-biostar-tb250-btc-and-gtx1060-gb/19167 "2017-07-14T16:26:37Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![ParteAss](https://avatars.discourse-cdn.com/v4/letter/p/8e8cbc/32.png) [@ParteAss](https://forum.zcashcommunity.com/u/ParteAss)\ **Post date:** [July 14, 2017, 4:26pm UTC](https://forum.zcashcommunity.com/t/6-gpus-and-only-4-working-biostar-tb250-btc-and-gtx1060-gb/19167/1 "2017-07-14T16:26:37Z")
Hello folks. I am building my first mining rig and i am having issues to get all the 6 GPUs to work and mine as they should. With 4 GPUs the rig works fine but, when connecting the 5th and 6th GPU the rig does recognizes the 6 GPUs but it only shows 4 mining,1 with 0 degrees of temp and 0 hashing and 1 with 9 hashing power and 0 degrees of temp I already changed the PCIs to GEN2 in the BIOS. Please help!! (Please keep in mind that i am new here and i do not know anything about mining nor programming). Here are my rig’s specs: - Biostar TB250-TBC - LGA1151 - 6x GeForce GTX 1060 6Gb - SSD 120Gb - 4Gb Ram - 2x EVGA 850 GQ ---
**Author:** ![smokinggun46](https://avatars.discourse-cdn.com/v4/letter/s/50afbb/32.png) [@smokinggun46](https://forum.zcashcommunity.com/u/smokinggun46)\ **Post date:** [July 15, 2017, 1:56am UTC](https://forum.zcashcommunity.com/t/6-gpus-and-only-4-working-biostar-tb250-btc-and-gtx1060-gb/19167/2 "2017-07-15T01:56:44Z")
maybe faulty risers? riser pins ---
**Author:** ![ParteAss](https://avatars.discourse-cdn.com/v4/letter/p/8e8cbc/32.png) [@ParteAss](https://forum.zcashcommunity.com/u/ParteAss)\ **Post date:** [July 15, 2017, 4:10am UTC](https://forum.zcashcommunity.com/t/6-gpus-and-only-4-working-biostar-tb250-btc-and-gtx1060-gb/19167/3 "2017-07-15T04:10:42Z")
Thanks ,… problem got solved by updating the BIOS to it latest version… 🙂