2x1g crucial ballistix PC4000, memtest86+, nf7-s, epox 8rda3, foxconn 6150K8MA-8EKRS. tested on all. on the nf7-s memtest is full of errors. on foxconn the ram is working flawless when it boots. the system was up even 2 weeks and no problem. sometimes on restart or after shutdown system won't work. I have to change the ram with some other and when I try after few days it boots with crucial. now epox. I do not have xp installed on it, only the cdrom for testing. sometimes the ram passes all tests flawless but after reboot it is again full of errors. I tried all kinds of timings and voltages. even reached 3.3 v on a MSI, which I forgot to mention. ideas, anybody?