# \[FIXED\] Particle Core Doesn't Appear in Device Manager - Windows 7
**URL:** https://community.particle.io/t/fixed-particle-core-doesnt-appear-in-device-manager-windows-7/21453
**Category:** Troubleshooting
**Created:** [March 26, 2016, 5:47am UTC](https://community.particle.io/t/fixed-particle-core-doesnt-appear-in-device-manager-windows-7/21453 "2016-03-26T05:47:08Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@hydrosquall](https://community.particle.io/u/hydrosquall)
#### Post date: [March 26, 2016, 5:47am UTC](https://community.particle.io/t/fixed-particle-core-doesnt-appear-in-device-manager-windows-7/21453/1 "2016-03-26T05:47:08Z")
Hi,
I have a Particle Core that I successfully configured in September via command line on my Windows 7 laptop (Thinkpad x1 Carbon).
I just powered it up again and it wasn’t connecting, so did a factory reset (hold down both buttons then release the right one). I tried configuring it with the legacy iPhone app, but it kept timing out without luck so I tried the CLI interface. I’ve tried both USB ports (USB 2.0 and 3.0). I know the drivers work because I have flashed the core once before from this laptop, but for some reason it’s not showing up in the Device Manager so I can’t update firmware.
Any ideas about how to debug and/or connect to the Core? Any ideas are much appreciated :)!
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### Author:  [@kennethlimcp](https://community.particle.io/u/kennethlimcp)
#### Post date: [March 26, 2016, 6:38am UTC](https://community.particle.io/t/fixed-particle-core-doesnt-appear-in-device-manager-windows-7/21453/2 "2016-03-26T06:38:48Z")
Hey @hydrosquall, is the device in Listening mode (blinking blue) when you are using the iOS or CLI to configure wifi?
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### Author:  [@hydrosquall](https://community.particle.io/u/hydrosquall)
#### Post date: [March 26, 2016, 4:05pm UTC](https://community.particle.io/t/fixed-particle-core-doesnt-appear-in-device-manager-windows-7/21453/3 "2016-03-26T16:05:59Z")
Hi Kenneth! When it is first plugged in, it is white momentarily, then it blinks green.
After I hold “mode down” down for 3+ seconds, it switches to blinking blue. I have the device manager open the whole time, and try “scan for new hardware” before and after being in Listening mode, no luck though.
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### Author:  [@kennethlimcp](https://community.particle.io/u/kennethlimcp)
#### Post date: [March 26, 2016, 4:08pm UTC](https://community.particle.io/t/fixed-particle-core-doesnt-appear-in-device-manager-windows-7/21453/4 "2016-03-26T16:08:05Z")
It might be a USB cable issue… It should show up as a COM port or other devices (if driver is not installed)
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### Author:  [@hydrosquall](https://community.particle.io/u/hydrosquall)
#### Post date: [March 26, 2016, 5:32pm UTC](https://community.particle.io/t/fixed-particle-core-doesnt-appear-in-device-manager-windows-7/21453/5 "2016-03-26T17:32:30Z")
Changing the cable fixed it, device shows up in device manager and I was able to configure the Core from the CLI. Thanks @kennethlimcp!!