updated po ba mga Hardwares natin?
try to run system update po,..
then try to connect to 5ghz after.
or
If your network card supports 5 GHz, then check your network adapter, 5 GHz in the network adapter may have been disabled by accident. Changing your network adapter mode would fix the issue.
Press the Windows logo key and R key at the same time.
In the Run box, type devmgmt.msc and click OK.
Go to Network Adapters and right-click on the network adapter. Click Properties.
Click Advanced > Wireless Mode > Auto > OK.
Note: Wireless Mode is only available for network cards that support 5 GHz. If you can’t find it, it means your network card doesn’t support 5 GHz.
In the Advanced tab, move to Preferred Band, set 5G first, then click OK.
Then you should be able to see 5 GHz.
Please, let me know if this solution worked for you.