# Lenovo p50 Em7455 No service error

**URL:** <https://forum.sierrawireless.com/t/lenovo-p50-em7455-no-service-error/24085>\
**Category:** MC/EM Series\
**Created:** [June 24, 2021, 3:24pm UTC](https://forum.sierrawireless.com/t/lenovo-p50-em7455-no-service-error/24085 "2021-06-24T15:24:05Z")\
**Posts on this page:** 8\
**Page:** 2

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**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\
**Post date:** [September 20, 2021, 7:20am UTC](https://forum.sierrawireless.com/t/lenovo-p50-em7455-no-service-error/24085/21 "2021-09-20T07:20:19Z")

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can you power it on by at+CFUN=1?

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**Author:** ![behi4321](https://avatars.discourse-cdn.com/v4/letter/b/57b2e6/32.png) [@behi4321](https://forum.sierrawireless.com/u/behi4321)\
**Post date:** [September 20, 2021, 7:20am UTC](https://forum.sierrawireless.com/t/lenovo-p50-em7455-no-service-error/24085/22 "2021-09-20T07:20:58Z")

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```auto
at+CFUN=1

+CME ERROR: operation not supported

```

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<div class="post-metadata">

**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\
**Post date:** [September 20, 2021, 7:27am UTC](https://forum.sierrawireless.com/t/lenovo-p50-em7455-no-service-error/24085/23 "2021-09-20T07:27:18Z")

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why did you not see this issue before?

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<div class="post-metadata">

**Author:** ![behi4321](https://avatars.discourse-cdn.com/v4/letter/b/57b2e6/32.png) [@behi4321](https://forum.sierrawireless.com/u/behi4321)\
**Post date:** [September 20, 2021, 7:33am UTC](https://forum.sierrawireless.com/t/lenovo-p50-em7455-no-service-error/24085/24 "2021-09-20T07:33:20Z")

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no idea !  
maybe for incompatible antenna ?

 ![image](https://us1.discourse-cdn.com/flex025/uploads/sierrawireless/original/2X/2/256536e07d0bdb92d1398f8c6b0566ab35253b81.jpeg)

 ![image](https://us1.discourse-cdn.com/flex025/uploads/sierrawireless/original/2X/f/f5a24a1bfa122a4f71197fa3e3ac8957408ae2c3.jpeg)

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<div class="post-metadata">

**Author:** ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)\
**Post date:** [September 20, 2021, 7:35am UTC](https://forum.sierrawireless.com/t/lenovo-p50-em7455-no-service-error/24085/25 "2021-09-20T07:35:24Z")

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no idea, you can use other antenna for comparison.

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<div class="post-metadata">

**Author:** ![dl5162](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/dl5162/32/2169_2.png) [@dl5162](https://forum.sierrawireless.com/u/dl5162)\
**Post date:** [September 20, 2021, 8:36am UTC](https://forum.sierrawireless.com/t/lenovo-p50-em7455-no-service-error/24085/26 "2021-09-20T08:36:26Z")

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> [@behi4321](#):
>
> `W_DISABLE:1`

means the rfkill output signal from the laptop is active.

Note that you might have to reset the BIOS settings to defaults after adding a modem, or the rfkill software control is disabled and the rfkill signal is permanently asserted. Unless your laptop has a hardware switch - in that case you need to flip it.

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<div class="post-metadata">

**Author:** ![behi4321](https://avatars.discourse-cdn.com/v4/letter/b/57b2e6/32.png) [@behi4321](https://forum.sierrawireless.com/u/behi4321)\
**Post date:** [September 20, 2021, 9:37am UTC](https://forum.sierrawireless.com/t/lenovo-p50-em7455-no-service-error/24085/27 "2021-09-20T09:37:41Z")

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updating bios solved problem  
 ![image](https://us1.discourse-cdn.com/flex025/uploads/sierrawireless/original/2X/2/2bf7578747feb2738d9863c4e08f727622a17246.png)

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<div class="post-metadata">

**Author:** ![behi4321](https://avatars.discourse-cdn.com/v4/letter/b/57b2e6/32.png) [@behi4321](https://forum.sierrawireless.com/u/behi4321)\
**Post date:** [September 20, 2021, 9:48am UTC](https://forum.sierrawireless.com/t/lenovo-p50-em7455-no-service-error/24085/28 "2021-09-20T09:48:00Z")

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thank you for your kindness

😍 😍 😍 😍

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