I can’t say why, maybe the memory you have just isn’t compatible.. no reason why it shouldn’t be though, specs are ok. Both mine work fine in Tr1mp & Tr5mp I do have a Tr2mp too that I haven’t yet tried it in so will tomorrow, can’t see why it wouldn’t but it does have a different bios so… can you return it as incompatible??
In my limited Vista testing so far it’s looking like the ram makes little difference to booting. I can only make a loose educated guess but so far SSD alone halves the boot to use time (use time is when continued hdd access stops).. I.5gb is iro 2 seconds faster 1.0gb 5 to 8 seconds slower than 2gb… so either the system can’t use the extra ram or it is simply CPU / bus limited and beyond the additional performance gained with SSD….. everything is waiting around for the CPU to get the job done…
The Vista home I have (as it came installed on a TR5mp) has a lot of stuff loading up, clock graphic, news links, my city temperature location, cpu % use graphic, office / Photoshop so I guess it can be skimmed down a lot to make it quicker. With 32gb SSD & 1.5gb it’s near enough 3 mins to fully booted with no hdd access, compared to over 6.30 with stock HDD same ram amount.