Inspiron G5 15 SE, new, keeps crashing

This has been happening to me too, on both Windows and Linux, unfortunately. So it might a BIOS issue, but it's happened before on 1.1.0 (factory), also after applying the 1.2.0 update, and still crashes after downgrading to 1.1.1.

I originally thought it was only certain games, and it had something to do with the driver or vcredist, but that's ruled out, since all games are crashing on all driver versions and OSs.

Same problem for me, the laptop arrived a week ago and most attempts to play games result in a black screen and the system restarting. I've updated the dell drivers, AMD drivers and bios but the problem persists. Temperatures are low during gaming so it's not a thermal issue. Gaming is not a priority for me on the system but I'd like to actually be able to use the hardware I've paid for.

I think I have found the issue, its options in the amd control center. I started with anti lag, chill, and image sharpening enabled. Was getting a hard restart about a minute into any game. Disabled all and turned back on one by one. The one that's making me crash is image sharpening, disable that and I'm good to go.

ugh, nvm - started doing it again with all options disabled.

I'm trying different things too to fix this. It's just annoying that I'm paying for the hardware that can handle the weight of playing games and such, but just won't work, even when there's video proof of the same model woking fine. Let me know if you find a solution that worked for you.

I got my laptop yesterday and it's started doing the same thing to me today. 
I have hardly used this laptop but so far I can't seem to run any games - which is the primary purpose I've purchased this laptop for. Within a minute or two of launching a game, the screen goes green and BOOM laptop crashes and reboots.

If anyone (or a Dell employee) knows of a fix for this, please share.

I got mine 2 weeks ago and it does the same thing. I have tried many different AMD driver versions as well as BIOS updates and nothing seems to work. It gets 1-5 minutes into a game and it hard reboots.

I've also tried running the full system scan in the Dell SupportAssist app and it crashes during the shader rendering section - I'd guess it's graphics card or firmware related?

Ok so last night I did a clean install of windows from the dell boot ( f12 on restart ). Full updates from windows and from dell update software thats pre installed. Did the amd driver straight from amds site thats listed for the dell g5 15 se. All seems to be well atm, have been running games ( metro exodus, bl3 ) all day long without issues. I did disable turbo boost via windows power settings though. Tried it before doing that and it was working fine all the same - just a tad to hot for my liking.

UPDATE: Laptop no longer boots after turning it off, no matter if its plugged in or not.

Ok it's definitely graphics software / firmware related and we MAY have found a fix.
Going off what HankyTheTank said in his last message, I assumed it was driver related but would really rather not reinstall Windows.
I've just reinstalled the graphics drivers and it looks to be a bit better now. Just played a game of Overwatch without it crashing. 
Download the "Adrenalin 2020 for DELL G5 15 SE Laptops" driver version from this link: 
https://www.amd.com/en/support/graphics/amd-radeon-5000m-series/amd-radeon-rx-5000m-series/amd-radeon-rx-5600m

When installing, make sure you select "additional options" and then "Factory Reset". 
This will delete the old AMD drivers before installing the new ones so that any issues aren't carried over to the new install - THIS STEP IS VERY IMPORTANT. 
Go through the rest of the install process as per usual. Reboot, etc. 
Then once its fully installed and rebooted, go into the program and search for updates - it'll now download version 20.5.1, install, reboot, etc and this seems to be the one working for me (so far).

It would suggest that the driver that the laptop ships with is faulted in some way. 

Hopefully this helps someone, if I find anything new I'll let you guys know  

Just an update: I've also run the full system hardware scan in Dell SupportAssist and it passed the test this time with top temps of 77C in the GPU. Looks very promissing at this stage as I couldn't even complete the hardware test with the original drivers. 

On another note: The SupportAssit app thinks that these graphics drivers are outdated and recommends updating to the version that the laptop came with (27.20.1010.1) - I would recommend ignoring this until dell updates the drivers to no longer have these issues. 

It's crashed on me after reinstalling drivers, and Windows. It also happens on Linux, which is why I don't think it has to do with the driver or OS.