# S4 Controller has nothing but cursor blinking after long power down **URL:** \ **Category:** Robot Controller\ **Created:** [July 10, 2018, 5:14pm UTC](https://tech-community.robotics.abb.com/t/s4-controller-has-nothing-but-cursor-blinking-after-long-power-down/8359 "2018-07-10T17:14:40Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![sizemorejk](https://dub1.discourse-cdn.com/flex005/user_avatar/tech-community.robotics.abb.com/sizemorejk/32/1753_2.png) [@sizemorejk](https://tech-community.robotics.abb.com/u/sizemorejk)\ **Post date:** [July 10, 2018, 5:14pm UTC](https://tech-community.robotics.abb.com/t/s4-controller-has-nothing-but-cursor-blinking-after-long-power-down/8359/1 "2018-07-10T17:14:40Z")
Hello all, I hope you are all well So I have an S4 controller which was turned off for the last week. When the tech came in to start up the line he flipped the cabinet back on to the robot and nothing came up. The teach pendant only shows a blinking cursor and has no ability to access any menus at all. There is no way to load the back up. The batteries are good as well. Please help and thank you in advance. ---
**Author:** ![DenisFR](https://avatars.discourse-cdn.com/v4/letter/d/dc4da7/32.png) [@DenisFR](https://tech-community.robotics.abb.com/u/DenisFR)\ **Post date:** [July 10, 2018, 5:29pm UTC](https://tech-community.robotics.abb.com/t/s4-controller-has-nothing-but-cursor-blinking-after-long-power-down/8359/2 "2018-07-10T17:29:02Z")
Hello, Do you have a count or only blinking cursor? Can you switch with an other TP? ---
**Author:** ![sizemorejk](https://dub1.discourse-cdn.com/flex005/user_avatar/tech-community.robotics.abb.com/sizemorejk/32/1753_2.png) [@sizemorejk](https://tech-community.robotics.abb.com/u/sizemorejk)\ **Post date:** [July 10, 2018, 5:30pm UTC](https://tech-community.robotics.abb.com/t/s4-controller-has-nothing-but-cursor-blinking-after-long-power-down/8359/3 "2018-07-10T17:30:09Z")
No count only the cursor and we did try another TP with the same result. Thank you for the fast response ---
**Author:** ![graemepaulin](https://avatars.discourse-cdn.com/v4/letter/g/258eb7/32.png) [@graemepaulin](https://tech-community.robotics.abb.com/u/graemepaulin)\ **Post date:** [July 11, 2018, 10:04am UTC](https://tech-community.robotics.abb.com/t/s4-controller-has-nothing-but-cursor-blinking-after-long-power-down/8359/4 "2018-07-11T10:04:07Z")
What is the colour of the LED’s on the computer cards? ---
**Author:** ![Zolee\_Zee](https://avatars.discourse-cdn.com/v4/letter/z/90db22/32.png) [@Zolee\_Zee](https://tech-community.robotics.abb.com/u/Zolee_Zee)\ **Post date:** [July 11, 2018, 1:57pm UTC](https://tech-community.robotics.abb.com/t/s4-controller-has-nothing-but-cursor-blinking-after-long-power-down/8359/5 "2018-07-11T13:57:34Z")
If there is no time, and you have the keydisk and the RW diskettes pull out all the cards (DSQC326,316,317/321), clean the slots, disconnect the battery, wait a little, put back all the cards and wait the system asking for instalation 🙂 But of course , check the leds ---
**Author:** ![DenisFR](https://avatars.discourse-cdn.com/v4/letter/d/dc4da7/32.png) [@DenisFR](https://tech-community.robotics.abb.com/u/DenisFR)\ **Post date:** [July 11, 2018, 4:12pm UTC](https://tech-community.robotics.abb.com/t/s4-controller-has-nothing-but-cursor-blinking-after-long-power-down/8359/6 "2018-07-11T16:12:13Z")
If you have to reinstall system, prefer use TFTP, if you can. 😉 ---
**Author:** ![sizemorejk](https://dub1.discourse-cdn.com/flex005/user_avatar/tech-community.robotics.abb.com/sizemorejk/32/1753_2.png) [@sizemorejk](https://tech-community.robotics.abb.com/u/sizemorejk)\ **Post date:** [July 11, 2018, 6:09pm UTC](https://tech-community.robotics.abb.com/t/s4-controller-has-nothing-but-cursor-blinking-after-long-power-down/8359/7 "2018-07-11T18:09:30Z")
Thank you all for the advice @graememepaulin I will have to get back to the system however I know there is one card without any lights that are lit @Zolee_Zee This will be the first thing Itry once I get back onto the system thank you so much. I will let you know how it goes. @DenisFR May I ask? Why use TFTP? Thank you all once again ---
**Author:** ![DenisFR](https://avatars.discourse-cdn.com/v4/letter/d/dc4da7/32.png) [@DenisFR](https://tech-community.robotics.abb.com/u/DenisFR)\ **Post date:** [July 12, 2018, 9:25am UTC](https://tech-community.robotics.abb.com/t/s4-controller-has-nothing-but-cursor-blinking-after-long-power-down/8359/8 "2018-07-12T09:25:57Z")
@sizemorejk: Because reinstall with diskette is very long and may crash some times…