# Node worked fine for months and stopped working **URL:** \ **Category:** Support and Troubleshooting\ **Created:** [January 14, 2022, 1:04pm UTC](https://community.umbrel.com/t/node-worked-fine-for-months-and-stopped-working/5746 "2022-01-14T13:04:10Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![StackingSats](https://avatars.discourse-cdn.com/v4/letter/s/ecae2f/32.png) [@StackingSats](https://community.umbrel.com/u/StackingSats)\ **Post date:** [January 14, 2022, 1:04pm UTC](https://community.umbrel.com/t/node-worked-fine-for-months-and-stopped-working/5746/1 "2022-01-14T13:04:10Z")
The node was built with all the genuine parts recommended by Umbrel (Ras power supply, etc) All these error messages are displayed but they don`t seem to make sense: **Error: External drive disconnected** The external drive was disconnected while Umbrel was running. This can sometimes happen when using an unofficial Raspberry Pi power supply. **Error: Version mismatch** The version of UmbrelOS on your microSD card is not compatible with the version of Umbrel on your external drive. **Error: System service failed** Something went wrong when starting Umbrel. **Error: Failed to start containers** Something went wrong when starting Umbrel. **Error: No external drive found** Please connect an external drive (at least 1TB) to a USB 3.0 port (blue color) on your Raspberry Pi and restart your Umbrel. **Error: Multiple external drives found** Umbrel only works with one external drive of atleast 1TB size. Please disconnect any additional external drives and restart your Umbrel. **Error: Failed to connect external drive** There was an error connecting your external drive. Please consider using the recommended hardware listed on getumbrel Thoughts? Thanks ---
**Author:** ![DarthCoin](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.umbrel.com/darthcoin/32/1628_2.png) [@DarthCoin](https://community.umbrel.com/u/DarthCoin)\ **Post date:** [January 14, 2022, 3:45pm UTC](https://community.umbrel.com/t/node-worked-fine-for-months-and-stopped-working/5746/2 "2022-01-14T15:45:34Z")
Definitely hardware failure. Change the USB cable and/or port ---
**Author:** ![LoboGuara](https://avatars.discourse-cdn.com/v4/letter/l/54ee81/32.png) [@LoboGuara](https://community.umbrel.com/u/LoboGuara)\ **Post date:** [January 14, 2022, 5:23pm UTC](https://community.umbrel.com/t/node-worked-fine-for-months-and-stopped-working/5746/3 "2022-01-14T17:23:32Z")
You have to test the USB cable (the wire) and the USB to SATA adapter (board or case). 1- Connect the SSD disk to a computer USB 3 (blue inside terminal) to the SSD, and then do a copy of a big file (greater tham 1GB) from the SSD to the SSD itself. USB copy speed should be around 100MB/s. 2- If less speed, test the USB cable (wire) changing it by another cable. 3 - If still no better copy speed, change the USB to SATA board or case to test it. 4- Finally, if no better speed, change the SSD diskto another to check if it was causing the problem. To do this tests you need a working second kit of usb wire, case and SSD. ---
**Author:** ![StackingSats](https://avatars.discourse-cdn.com/v4/letter/s/ecae2f/32.png) [@StackingSats](https://community.umbrel.com/u/StackingSats)\ **Post date:** [January 14, 2022, 5:45pm UTC](https://community.umbrel.com/t/node-worked-fine-for-months-and-stopped-working/5746/4 "2022-01-14T17:45:17Z")
Thanks @DarthCoin and @LoboGuara for taking the time to provide your thoughts. I unplugged the device, removed and reinserted the micro SD card and replugged it and now it works again… When I had issues before with my other nodes, the micro SD card has often been the main point of failure. I still have a SanDisk Extreme on this one but now I’m using the SanDisk High Endurance and it seems more reliable.