# Problem with mining **URL:** \ **Category:** Mining\ **Created:** [October 25, 2018, 2:57pm UTC](https://forum.safex.org/t/problem-with-mining/5350 "2018-10-25T14:57:24Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Zwola](https://forum.safex.org/letter_avatar_proxy/v4/letter/z/90db22/32.png) [@Zwola](https://forum.safex.org/u/Zwola)\ **Post date:** [October 25, 2018, 2:57pm UTC](https://forum.safex.org/t/problem-with-mining/5350/1 "2018-10-25T14:57:24Z")
Hello i have problem with mining safex cash. I have 7 card nvidia 1070 gtx. I followed the instructions in the forum, i.e. I generated a wallet, after which I downloaded XMR Stak and again did everything with the movie. I introduced changes to the pool file, i.e. I added the generated address and then saved the file. After restarting the application, only two of the seven graphics cards work. Previously, when I was digging other currencies, they worked all. Please, advise me on how to solve my problem. ---
**Author:** ![Rich.bate](https://forum.safex.org/user_avatar/forum.safex.org/rich.bate/32/2123_2.png) [@Rich.bate](https://forum.safex.org/u/Rich.bate)\ **Post date:** [October 25, 2018, 3:04pm UTC](https://forum.safex.org/t/problem-with-mining/5350/2 "2018-10-25T15:04:01Z")
Hi Zwola. I think i know the issue here. Please let us know the contents of nvidia.txt file found within the XMR-STAK folder. Within it, you will find a block of code similar to below: ![image](https://forum.safex.org/uploads/default/original/2X/9/9d8458a29d5db8b1ac00c377fe6d2ecc48257c29.png) In theory, there should be one of these blocks of code for every card you have running. The part within it that says “index” : 0 should go up in sequential order (0, 1, 2, 3, 4 etc) based on how many cards you have. Normally, the first time you run XMR-STACK it generates the nvidia.txt file and should dettect all your cards. If it’s not worked properly, this might explain why only two of your cards are running.