This computer is pretty new (21st Sept) and it has a seal on the casing, I'd rather not tamper with it if possible.
When I mentioned this on the forum where the computer came from it said it was a known issue with Vista and they gave a link to a Knowledge Base article, I did peruse it but it didn't mean a thing to me.
Edited to add that it wasn't in the forum it was in an email that I sent asking about the missing GB, their reply was the link mentioned below.
I just looked at the email and this is copy/pasted from it.
The issue where Windows Vista does not see all 4GB of RAM when it is installed is a combination of various hardware and software issues. The following Microsoft Knowledgebase article explains the issue: http://support.microsoft.com/kb/929605/en-us
Last edited by JanTheNan on Fri Nov 09, 2007 3:08 pm, edited 1 time in total.