computer dose not recognize 5g from router but does recognize 2g

[RobertUC]

I have a HP Notebook 15-dy0013dx OS win 10 (64).  It has stopped picking up 5g from my router but still does pick up 2g.  Have tried everything i.e. restarts , diagnostics, etc.  Have 2 phones that pick 5g so I suspect it's a computer issue.  HP resources have been no help.

[banhien]

@RobertUC 

Its specs

           https://support.hp.com/au-en/document/c06418898

which does not say anything about its Wifi adapter . From its Parts list

         https://partsurfer.hp.com/partsurfer?searchtext=7FU54UA

you can see it ONLY has  WLAN RT BGN 1x1 +BT4.2LE M part #  L21480-005 which does NOT support 5G networks.

It only has ONE antenna, you can use the following wifi adapter to be able to pick up 5G SSID networks

         https://www.intel.com/content/www/us/en/products/sku/94854/intel-dual-band-wirelessac-3168/specifica...

Regards.

[Paul_Tikkanen]

Hi, @RobertUC 

The parts list for your notebook indicates that it has a single band (2.4 GHz only) Wi-Fi card.

That is why your notebook cannot find or connect to any 5.0 GHz Wi-Fi networks.

HP PartSurfer

L21480-005

WLAN RT BGN 1x1 +BT4.2LE M

That would be a Realtek RTL8723DE model card.

RTL8723DE - REALTEK

If you want to upgrade the card to a dual band one, that is possible.

This model would work fine.

Realtek RTL8821CE 802.11 ac 1x1 Wi-Fi + Bluetooth 4.2 Combo Adapter (MU-MIMO supported) HP part # L17365-005.

The card has a maximum throughput of 433 MBPS on the 5.0 GHz Wi-Fi band with an AC router and an excellent signal.

You can find this model on eBay, or Ali Express. 

I see some Intel 3165 cards listed on the eBay listings, so don't buy those.

https://www.ebay.com/sch/i.html?_from=R40&_nkw=L17365-005&_sacat=0&_sop=15

RTL8821CE - Buy RTL8821CE with free shipping on AliExpress

On the Ali Express listings, make sure the card has the HP Part # of 915620-001.

Below is the link to the service manual:

Maintenance and Service Guide HP 15 Laptop PC

PS: The Intel 3168 AC card will not work properly (Wi-Fi may work, Bluetooth will not) in your notebook because that card requires two antenna wires, and your notebook only has one.

It is not even listed as a supported card in chapter 3 of the service manual.

[RobertUC]

Not sure I understand as my computer has picked up the 5g without any problems for the past 2 years.  Thanks for the info.

[Paul_Tikkanen]

You're very welcome. 

Sorry, but that's absolutely impossible with the RTL8723DE wifi adapter. 

There's no way to make it work on the 5.0 GHz band. 

Please take a look at the RTL8723DE Wi-Fi card specs link I posted from Realtek's website.

General Description

The Realtek RTL8723DE is an 802.11bgn 2.4G single-chip that integrates Wireless LAN (WLAN) and a network PCIe interface controller with integrated Bluetooth 5.0 USB interface controller. It combines a WLAN MAC, a 1T1R capable WLAN baseband, and WLAN RF in a single chip. The RTL8723DE provides a complete solution for a high-throughput performance and low power consumption integrated wireless LAN device.