All memory not seen

Hi all, can anyone help?

Just installed XP 64 bit and all seems ok, except my pc will only see 2.4 gig of memory. I have 4 gig installed. I also have XP 32 bit installed (dual boot), and my local PC guy thinks that's causing the problem. I'm not altogether convinced. Any ideas?

Thank you

Jimbo

 

Run this online scanner and see ifi it picks it up.

http://www.crucial.com/systemscanner/

Check memory with http://www.memtest.org/

 

Thanks Twinkel,

ran the crucial scanner and it can see the 4 gig.

Any ideas what to do?

Jimbo

 

Oh, forgot to say, BIOS only sees 2496 gig. I have heard you need to map the memory?

 

Ok Guys, problem sorted. I enabled the memory mapper in the Bios and now all is well.

Thank you all for your help.

Jimbo