Ram not clocking down BSOD loop?

I upgraded the RAM in my laptop from 2 x 2GB 1066 to 2 x 4GB 1333. I know that my laptop doesn't support this. However, I assumed that this would downclock to 1066. 8GB are also recognized in the BIOS, all good. After the BIOS picture, however, I come to "security kernel check failure" and a boot loop begins.

The ram doesn't seem to slow down and is causing the problems.

There are no setting options for this in the BIOS.

Can I somehow get the laptop to work with the RAM or do I have to buy another one?

Of course, it doesn't downclock automatically, you have to do that yourself

Why shouldn't that be the case?

Why should he give away performance?
Adjust it yourself

As described, you can't set it yourself. Usually the ram only has full power in the XMP profile. Otherwise he goes to Jedec, where he should actually work with everything.

Well, it doesn't slow down, that's why it doesn't work. My question is still how you can clock it down (without bios, it doesn't work there)