Customer's computer was bluescreening, so I decided to swap out ram first. IBM Netvista with XP home and 256mb rambus (4 x 64). Took out 2 chips and replaced with CRIMMS in one bank. Went to boot - no boot - post beeps 1-3-3-1 which is supposed to mean Autosize dram. Tried every possible combination of rambus and crimms, all rambus, new rambus, and in every case I get the same 1-3-3-1 beeps and no post. Any ideas?