Dell Precision 5820 (Bios Version: 2.38)

Hello,

I have updated my Windows 11 Pro System to Windows 11 24H2 today. Windows told me to reboot. So I restarted the machine; the dell logo showed up like always, but then I get a blue screen with "System_Thread_exception_not_handled: fltmgr.sys . I have restarted the machine couple of times, but the bluesceen just does not disappear. Is there a way I can boot the machine and roll back from windows 11 24H2 ?

What can I do to solve this problem?