On 2019-2-12 17:35, Paul wrote:
...
Thank you for the thorough instruction. I did run memtest for about 20
minutes, covered about half of 2G RAM, with no error. Yet it seems to me
permanent or noise related RAM error cannot explain the good state in
normal use and BSOD at safe mode start. Safe mode should not use a
special area of memory, should it?

Malware is hardly possible to me as I have explained (I am confident
about that), and how it judges it's in safe mode and trigger a BSOD to
prevents it being cleaned seems impossible either. I'd rather not give
it a try. Thanks anyway!

--
Regards,
Lu Wei
IM:
PGP: 0xA12FEF7592CCE1EA