vista 64bit memory help

hello all
i'm not trying to be a pain but can someone give me as much
info on vista home pre 64bit memory . i had 2gig installed
and it runs fine so i got 2gig more added it vista reads
2048 (2gig).so i tryed reinstalling vista again and keep geting
(bsod) ? so i took out 2gig and installed vista and then added
the other 2gig and it worked vista reads (4096) 4gig . last night
i turned the system off and went to work come home booted up
and vista now reads (3582) ? also with 4gig vista likes to crash
alot as with 2gig it didn't crash but maybe 1 or 2 times in like
3 months ? my bios is reading it as 4gig and i ran cpuz and it's
reading it as 4gig but vista reads (3582) and yes i'm using 64bit
and no i can't find anything about (remaping) or anything like
that? i have a (asus) p5n-e sli m/b.
the thing i don't understand from the start is how comes when
i added the new memory from the start vista didn't read it as
4gig.and after restalling vista reads it. nothing has changed
i did the windows update and insatlled everything first and
then added the new memory ? also way it will not install with
4gig ie (bsod) everytime.i tryed clean install and upgrade and
no go only (bsod)? is this something that will be fixed with
(sp1). well thanks for your time ..
mike


--
scrooge

"scrooge" <scrooge.2wqyi2 DeleteThis @no-mx.forums.net> wrote in message
news:scrooge.2wqyi2@no-mx.forums.net...
>
> hello all

> the thing i don't understand from the start is how comes when
> i added the new memory from the start vista didn't read it as
> 4gig.and after restalling vista reads it. nothing has changed
> i did the windows update and insatlled everything first and
> then added the new memory ? also way it will not install with
> 4gig ie (bsod) everytime.i tryed clean install and upgrade and
> no go only (bsod)? is this something that will be fixed with
> (sp1). well thanks for your time ..
> mike

Have you run one the memory test available in Vista or one
of the freeware ones?
Perhaps your motherboard has problems when using 4GB.

Tom Lake