Dear friend... your problem is understood... but the information I require to assist you is insufficient.
What I mean is... "My router is on but WiFi signal not showing up" is insufficient to your specific "challenge" and poses numerous alternatives that I am not even going to BEGIN to ask... because I have been there, done that, and own the T-Shirt and the baseball cap.
Anyone "In the Know"... knows that what you are facing is specific to your ... "items"... and that ANYONE could suggest this or that and the other.
Yes... I know... sometimes I face a challenge, and the thing that frustrates me is that I do not know how to ask for a solution because I do not understand what is happening,,, and so... invariably... to ask for something that I do not understand... other than... "IT DOESN'T WORK"... invites a plethora of kind and well-intended remedies that will simply get you to chase your tail,,,
How can I ask for an answer, when I do not even understand that which I am facing... and lack the knowledge for the asking?
Moreover... regarding WiFI connections... in my experience... I have discovered that what "works" for one individual"... who posts a "100% Remedy" for this, that and the other... is simply NOT a proven remedy for others,,,
And so... you seemingly complain, "My router is on but WiFi signal not showing up"....
Are you going to be responsible to all of us, who reach out to you, and report back... or are you going to be one of those "lurkers"... who find a solution... and then DISAPPEAR?
I am just "saying"... because if I were with you... LITERALLY... where you are at... I could most likely sort out your problem in about 5 minutes of diagnosis... and after that 6 minutes ... urn to you and ask several questions about your ISP,,, and get it sorted...
WiFI connection problems are UNIQUE............. and there IS no SINGLE standard for each individual user!
Apologies, dear friend,,, but THIS IS THE WAY I SEE IT... and that is that... and I will spit in my mess kit over your seeming... "problem"... which is UNIQUE and SPECIFIC to a lot of things that I haven't time to express,,,