Just installed Slackware15 on a
Asus Vivo Book
model M509-MB52-CB
Wireless card: Realtek 881CE
not sure where to start looking .. I used to let wicd figure all this out.

You need to start NetworkManager, it is part of a full install.

Go to /etc/rc.d/ and look for a file called rc.networkmanager. It is not eecutable on a new install. As root, chmod +x rc.netowrkmanager. Then either boot, or run /etc/rc.d/rc.netwrokmanager start. You can configure your wi-fi card with networkmanager. You can display the conectivity with NM, let us know how it goes.

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You can also use pkgtool to setup your network.
As root, at the prompt, type, pkgtool
and then select, Setup,
and take it from there.
Or you can skip that and, again, as root, type, netconfig
at the prompt and take it from there.

OK I had this problem in the past so the first thing I did was check
Network manager to see if it was executable.
and is was.
and it was running.
I stopped it and restarted it.
but no luck.
I ran ifconfig
and it only shows lo:
no ethernet or Wifi.

ran netconfig
then rebooted.
I think this ran during the install.
any way still no network.
Seems to me when they dropped wicd I had to do something with KWallet to get my network back.
I was running current and all of a sudden I lost my network.

Right click on the NM icon, it should display "Configure Network Connections". Click on it. Do you see under the Connections column your adapter listed? If yes, there are a series of tabs to configure your connection. Have you updated that with correct values for your network?

if you click on the Network Manager Icon
You get a blank screen with nothing to select
It just says "No Available Connections"
sort of like what /sbin/ifconfig says

Wireless card: Realtek 881CE

are you saying this because you know or is the system reporting this, as in lspci, lsusb

lspci shows me
softwares won't work if there's no hardwares

Can you double-check the wireless card model? There's a Realtek 8821ce (which requires building a kernel module; I can help with that), but I can't find anything about an 881ce.

EDIT: Not sure exactly when I'll be able to log on today, so here's what you can try if the card is actually a Realtek 8821ce.

There's a SlackBuild for this card here in Ponce's Github repo. The only catch is that the upstream version in the SlackBuild doesn't build against 5.15.x kernels; instead, use a more recent version.

Download the source code as a zip file, and make the following changes to the SlackBuild:

At line 28,At line 64,From there, just go ahead and build, install and reboot. You'll need to build and install a new module whenever there's a kernel upgrade.

lsusb does not show a network card
it shows a bluetooth and some other stuff
lspci .. command does not exist
Not sure where I got the RealTek card info. Looks wrong.
using the computer model number I get ..Intel® Wi-Fi 5 (802.11ac)
and
Wi-Fi 5(802.11ac)+Bluetooth 4.1 (Dual band) 1*1

ok I booted back into windows and ran device manager
it shows Network Adapters
RealTek 8821CE Wireless LAN 802.11ac PCI-E NIC

back in slackware
ran /sbin/lspci
01:00.0 Network controller:Realtek Semiconductor Co. Ltd RTL8821CE 802.11ac PCIe Wireless Network Adapter

my situation is I have two laptops both running Slackware15
one has a network and one doesn't.
so to get this slackbuild into the new computer the only way is with a USB stick.
I looked at
https://github.com/tomaspinho/rtl882...4e50759ed1affb
but don't know what to do next.

There is a slackbuild for that card on SBo. Since this is 15.0, use Ponces repo to build and install it.

SO I think I'm going to return this computer to the store.
I'm not really interested in building a kernel module.
This was my third try at getting Slackware15 installed on a new laptop.
Thanks for the help anyway.