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I am trying to get my RPi4B(4GB) powered ON with a power supply but am frustrated with the results. I found a workaround to this problem, which is that I can power on the Pi4B with a type-C USB cable connected to a desktop USB port, but I do not want to continue doing this. Since powering on the Pi4B this way, I have installed Raspbian OS and Kali Linux on it, both of which run smoothly.

I used the Raspberry Pi's official charger with 5.1V/3A output and it just doesn't power it on. Some different cables(connecting via the desktop USB port) that i used earlier to check the Pi4B showed the low power symbol and other experiments with the Power(like using a powerbank, instead!) smoked 2 of my Class 10 memory cards.

I found success with the Samsung cable so I subsequently stopped looking.

The only way my VGA monitor responds to the RPi4 is if I connect the power from the desktop USB port. Also I am doing this in my college and this works on just 1 monitor(/23), which is not an HDMI monitor [1440x900]. Although I haven't changed anything in the config file to set this resolution for even boost hdmi, it just works! Also tried using a 5V/3.1A[shorturl.at/AGLVW] and that doesn't work for me either. I have another RPi4B 2GB variant which responds exactly the same way to all the issues i mentioned above.

As of now i have kept the RPi4 aside(ever since the last SD card burnt), please tell me how i can get it running again without having to rely on a a desktop USB port everytime...

Edit1: The official PSU is not powering it on. I do not need a cable when i can use it directly after connecting it to a power socket. Issue is it does not work with any other charger either. The only way it works is if I put the PSU away from another charger and use it's cable from the desktop USB port.

Also, I did use another (Official)PSU and yet the it didn't power on, so i don't think the psu is the issue.

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    And have you checked that your official PSU is working?
    – Dirk
    Mar 12, 2020 at 17:11
  • Surprised it powers up from a usb port, presumably it must be usb3 as usb2 only provides 0.5 amp
    – Bra1n
    Mar 12, 2020 at 19:31
  • @Bra1n OTOH, USB-C ports on computers built in the past few years are often/usually intended for fast recharge of phones, etc., so will provide the amps, and because they are probably on relatively high quality PSUs (particularly desktops), unlike many/most wall wart chargers, they'll probably provide a pristine 5V under load. So there's a good chance this is a better supply than a $25 5V PSU, official or otherwise.
    – goldilocks ♦
    Mar 12, 2020 at 19:37
  • @mach3 Thank you for not taking that too personally, I've deleted all the relevant comments.
    – goldilocks ♦
    Mar 12, 2020 at 19:39
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    TL;DR, and this may have nothing to do w/ your issue, but FYI: The RPi4 suffered a brain fart during design that left initial units incapable of being powered from e-Marked USB cables. I've read that The Organization has since decided to remedy the issue, and have released a new hardware version of the RPi 4B. We'll be interested to hear how your issue turns out!
    – Seamus
    Mar 12, 2020 at 23:12

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