Raspberry Pi Forums

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

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.

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

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.

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

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.

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

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...

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).

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.

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

Noah nck wrote: ↑

Mon Jul 13, 2020 12:37 pm

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/

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

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

Do you have SSH enabled on your pi ?

No, should I ?

Noah nck wrote: ↑

Mon Jul 13, 2020 7:35 pm

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).

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.

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.

How do I do this?

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 )

Noah nck wrote: ↑

Tue Jul 14, 2020 5:04 pm

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