windows 7, SSD, and BSOD

hi there, had a failry stable system running vista, until about 3 months ago i "upgraded" to windows 7 with a shiny new SSD.

had BSOD since day 1, sometimes it happens once every other day, sometimes 3 times a day. different times, different programs, all kinds, seems very random.

gives different error codes:
0x000000fc,
system_service_exception 0x0000003b,
page_fault_in_non_paged_area 0x00000050
etc

not very good at this kind of thing ....

did a repair on windows, didnt help. tried taking out memory sticks one at a time, didnt help. put latest SSD firmware, didnt help.

what should i do??