XPS 17 9730, Crucial RAM keeps freezing on BIOS load, any ideas?

Unknown about Crucial ram. Dell only tested/validated the XPS 17 9730 with our OEM memory =

MVK8P 8GB, SODIMM, DDR5, 48MHz, 1Gx64, Unbuffered, Single rank, Non-ECC, Non-Encrypted
Hynix HMCG66AEBSA/HMCG66MEBSA, Kingston KMVK8P-HYM-I, Micron MTC4C10163S1SC48BA1, Samsung M425R1GB4BB0-CQK

VNY72 16GB, SODIMM, DDR5, 48MHz, 2Gx64, Unbuffered, Single rank, Non-ECC, Non-Encrypted
Hynix HMCG78AEBSA/HMCG78MEBSA, Kingston KVNY72-MIA-I, Micron MTC8C1084S1SC48BA1, Samsung M425R2GA3BB0-CQK

R62CW 32GB, SODIMM, DDR5, 48MHz, 2Rx8, Unbuffered, Dual rank, Non-ECC, Non-Encrypted
Hynix HMCG88AEBSA/HMCG88MEBSA, Micron MTC16C2085S1SC48BA1, Samsung M425R4GA3BB0-CQK

RAM from Dell is crazy overpriced though. If it is a Dell secure boot issue how would I get around it? The same thing happens with just one of my OEM Dell sticks removed, so that suggests it's the Dell Secure boot thing not liking the change in RAM?

It's not a secure boot issue, no.

Unplug the system and disconnect the battery from the mainboard.  Hold the power button for 30 sec.

Then install the new memory and reassemble the system.

Give the system a couple of minutes to detect and set the memory speed - see if it will then boot up.

Thank you, I'll give that a try tomorrow - what should that do?

I'm just having a go at disconnecting the battery; how on earth do I do it?! I've tried undoing all the screws and lifting it and can see it's connected by some thin kind of cable, but I can't see what it's actually connected to or how to disconnect it! It seems very thin and I'm worried that if I pull it in the wrong direction I'll break it! Can anyone help? The only video I found on Youtube just seemed to lift it and it came out, but assumed you knew what you were doing and just did it without explaining what they were doing!

Service manual here

https://www.dell.com/support/product-details/en-us/product/xps-17-9730-laptop/resources/search

it has the details.

Ah, thanks, got it. That wasn't apparent from the video! 

OK, so after doing that and changing the RAM I still got it sticking on the Dell logo. So I went back to the original and then got it sticking on that as well! Arrgggh! So after swearing and leaving it for five minutes I came back to it and it had booted into the BIOS telling me to set the date. Who knew that you need to wait that long after the Dell logo for it get to that! So I tried the new RAM again and left it, and after five minute of freezing on the logo it again came back to the BIOS, and alerted me to the change in RAM. Phew!

I've never know a PC to take so long to boot into the BIOS, usually it's seconds and recognises any changes straight away! 

So it looks like both the 5600 and 4800 RAM sticks are fine. I put in the 5600, but it looks like it's running at 5200mhz according to the BIOS - I presume that's fine? Or would I be safer using the 4800 (my original ones were 4800).

Also, now I have reset the BIOS, other than correcting the date, are there any other settings I should be changing back in the BIOS? It does seem to take longer to boot now, does Dell's safe boot thing kick in by default on a BIOS reset?

Thanks for your time BTW!

It should be fine as is and from here on.  There is a controller chip on the mainboard that has to read from the BIOS chip, which is why it can take a few minutes after a complete power drop (i.e., when the main battery is disconnected).

Ah, thanks!

Now I just need to work out why the general performance of this laptop is so bad!
https://www.userbenchmark.com/UserRun/70381370

I really regret buying the 9730, so many issues, not sure I'll ever get a Dell again!