when i first brought my pc it said it had 512 ram but it always said only 256 is installed so after a year i brought 2 512 sticks and added them but had to take the original out because it was not compatable so i should be running a gig now my pc says its still only running 256 ram heres the spec which says the ram is installed anyone know what the problem could be Operating System System Model Windows XP Professional Service Pack 2 (build 2600) Enclosure Type: Desktop Processor a Main Circuit Board b 1.80 gigahertz AMD Sempron 128 kilobyte primary memory cache 256 kilobyte secondary memory cache Board: Gigabyte Technology Co., Ltd. nForce Bus Clock: 200 megahertz BIOS: Award Software International, Inc. F6 08/13/2004 Drives Memory Modules c,d 164.69 Gigabytes Usable Hard Drive Capacity 138.49 Gigabytes Hard Drive Free Space _NEC DVD_RW ND-3520A [CD-ROM drive] TSSTcorp DVD-ROM SH-D162C [CD-ROM drive] 3.5" format removeable media [Floppy drive] HDS722516VLAT80 [Hard drive] (164.69 GB) -- drive 0, s/n VN643ECDERL8JD, rev V34OA6MA, SMART Status: Healthy 256 Megabytes Installed Memory Slot 'A0' has 512 MB Slot 'A1' has 512 MB Slot '' is Empty Local Drive Volumes c: (NTFS on drive 0) 16.47 GB 2.62 GB free f: (NTFS on drive 0) 148.22 GB 135.87 GB free
Where are you getting your reading? To be honest mine says its got 16mb but its got 256mbs and uses 256mb too!