Hello all, newly registered here. Have registered before, early 2005, but don't recall the details at all since I move around the globe too often with different systems to use I lose track, sorry. A friend staying with me built 3 new systems for me and I tried to move some very important old encrypted data over, 23GB worth.. I use Truecrypt, for its many benefits but just before moving tried to test the data files created that one can mount as a volume/partition to access. Tried Truecrypt 4.3 and 5.1a Well whadyaknow, every single one of the files gives my systems an instant crash! I then tried some more of these files on other drives using my main system -- same result. I need these so desperately. Can anyone help me with this please? There is no BSOD etc, it just restarts my system instant. I don't have any system instability/error whatsoever, it was folding all last week the friend said. Other details (all stock): AMD Phenom X4 9850 BE 2.5GHz MSI K9A2 Platinum (tried Abit AX78 before) 2x 1GB Corsair 800 4-4-4-12-15 4x 80GB WD and 1x 250GB WD Windows XP Professional SP3 Gigabyte Odin GT 550W Thank you for any help. Alina EDIT1 I just gave it another whirl but managed to save a crash dump. Repeated it three times. Looking through the dump analysis, this is what is being shown as the problem: Probably caused by : ifsmount.sys ( ifsmount+9b1f ) I had TC working perfectly a little while ago. That above driver is from Ex2 IFS For Windows, the file system driver for the Ext2 file system I recently installed to be able to access my Linux drives in Windows. That's what my friend said anyway, have to ask him more when he gets back home. I suppose I've part solved my problem already. Still help is greatly appreciated.