I can't get my raspberry pi 3 b+ to work at all

[Noah nck]

I plug my pi into a perfectly working monitor with an SD card loaded with NOOBS, and nothing comes up no rainbow screen no nothing it just says no signal. It used to work until I tried to update my pi after years of no use. the sudo command wouldn't work to update it so I had to re download NOOBS via SD card.Can anyone please help.
Thanks

[pcmanbob]

So what are the red and green LED's doing when you try to boot your pi ?

How did you reload noobs on to your SD card ?

Have you tried using the raspberry pi imager https://www.raspberrypi.org/downloads/ to load a copy of raspberry pi OS directly on to your SD card.

[Noah nck]

The red and green lights stay still stay still no flashing ect. I followed a tutorial in a book which said to just download the noob file, extract the zip and the copy and paste the file onto the SD card. I previously tried a YouTube tutorial using a imager but not the one you mentioned and not with NOOBS with rasbian. Thanks

[rpdom]

What size SD card? Cards of 64GB and higher need to be formatted as FAT32 for NOOBS. By default they format as exFAT which doesn't work on a Pi.

[HvdW]

Is the power supply working?
Did you test by charging a phone or connect it to anything else giving a sign of life?

[Noah nck]

Yes the power supply is working. I tried using the imager now and it seems to be working. The green light has gone off and flickers every now and then.

[Noah nck]

Thanks guys. I got it all working then logged out now it isn't working again. Any ideas.

[pcmanbob]

So you booted successfully and completed the setup then logged out ?

So what happens when you try to boot from the SD card a second time ? and don't say it does not boot, we need detail ,
for example do you see any output to the screen , what do the LED's do etc...

[Noah nck]

The red light stays on while the green one flickers. There is no output on the screen. I'm using hdmi to VGA converter (if that makes any difference).

[pcmanbob]

So is you pi connected to the network , can you find its IP address in the connected devices page of you router ?

if you can then it proves its booted and you problem is just with the hdmi output or the hdmi to VGA converter.

[Noah nck]

I can use my monitor as a second one to my computer so assume that it works. I don't know how to find out the IP address.
Thanks

[DougieLawson]

I don't know how to find out the IP address.

Most home routers keep a list of connected clients. Point your browser at http://192.168.0.1 or http://192.168.1.1 or http://192.168.0.254 or http://192.168.1.254 [those are the usual addresses].

Or install Fing and scan your network with that. There's Fing for Android, iPhone, Windows & Mac OS. https://www.fing.com/

[Noah nck]

Ok so my raspberry pi is connected to the internet. Does this mean that it is an issue with the monitor?

[pcmanbob]

So it is booting , it's just a problem with the display.

Do you have SSH enabled on your pi ?

[Noah nck]

No, should I ?

[DougieLawson]

No, should I ?

Probably a good idea.

Power off. Pull the SDCard. Insert that in a USB reader or slot in your Windows system NOTE: ignore (as in [CANCEL]) EVERY pop-up window that Windows creates. Open a command window [WIN]+[R] cmd.exe [ENTER] and run d: then echo "" >> ssh.txt then exit.

Safely eject the SDCard. Insert it back in your RPi and boot up. It will now respond to a PuTTY session to its IP address (which should be the same address as you discovered earlier).

[Noah nck]

We have managed to get it working it was simply an issue with logging of. We now use sudo halt and it works. Thanks guys for the help.

[pcmanbob]

The only thing I would add to Dougies instructions is to check D drive is actually your SD card reader drive that has your SD card in with raspberry pi OS on.

Once you have established a connection to you pi via SSH then you can start trouble shooting your display problem by running TV service -m DMT and listing the results here.

[Noah nck]

How do I do this?

[Adamanewtown]

Extract the noobs zip to the sd card (that presumably is fat32) as usual BUT move the contents of the remaining noobs FOLDER in the sd card (NOOBS_?_?_?, replace the ?'s with the version number) from the folder to the sd card and delete the empty noobs folder. it should work now (i am using a raspberry pi 3b+ to type this and this method worked for me )

[pcmanbob]

How do I do this?

How do you do what ?

If your pi is working now you can enable both SSH and VNC via sudo raspi-config

https://www.raspberrypi.org/documentati ... -config.md