Unable to boot due to Page Fault at high IRQL, NTFS partition mount

Real HW : Packard Bell Laptop (AMD Athlon XP 1500+; HDD with 1 FAT32 (backup) and 1 NTFS partition (System))

 Unable to boot

0.4.15-dev-5581 : BSOD, Page fault
0.4.14-dev-1563 : Exception (see bt below)
0.4.14-dev-15 : starts but "frozen" screen (and on on-screen log) before logon

============

 reactos-livecd-0.4.15-dev-5581-g84e32e4-x86-gcc-lin-dbg

 (/ntoskrnl/mm/mmfault.c:123) Page fault at high IRQL was 31, address c914ec83

Entered debugger on last-chance exception (Exception Code: 0xc0000006) (Unknown User defined exception)

 reactos-livecd-0.4.14-dev-1563-g950124b-x86-gcc-lin-dbg

 reactos-livecd-0.4.14-dev-15-gcf11cd9-x86-gcc-lin-dbg