I'm trying to upgrade my memory i have 2 512 and 1 1024. All are same speed. I can use any two of them in any order in the first two slots and everything is fine but when i try to put in a third into either of the remaining 2 slots the computer will not boot and i get the 3 beeps. checked all the sticks and their all fine. tried each one alone also with no problems. Computer is supposed to be capable of 4gb. Running windows xp pro sp3.
Motherboard:
CPU Type Intel Pentium 4 530, 3000 MHz (15 x 200)
Motherboard Name Unknown
Motherboard Chipset Intel Grantsdale-G i915GV
System Memory 1509 MB (PC3200 DDR SDRAM)
BIOS Type Intel (02/14/05)
BIOS Properties:
Vendor Intel Corp.
Version AG91510J.15A.0816.2005.0214.1818
Release Date 02/14/2005
Size 512 KB
Boot Devices Floppy Disk, Hard Disk, CD-ROM, ATAPI ZIP
Capabilities Flash BIOS, Shadow BIOS, Selectable Boot, EDD, BBS
Supported Standards DMI, ACPI
Expansion Capabilities PCI, USB
Processor Properties:
Manufacturer Intel(R) Corporation
Version Intel(R) Pentium(R) 4 CPU 3.00GHz
External Clock 200 MHz
Maximum Clock 3600 MHz
Current Clock 3000 MHz
Type Central Processor
Voltage 3.0 V
Status Enabled
Cache Properties:
Type Internal
Status Enabled
Operational Mode Write-Back
Maximum Size 16 KB
Installed Size 16 KB
Supported SRAM Type Asynchronous
Current SRAM Type Asynchronous
Error Correction Single-bit ECC
Socket Designation Unknown
Cache Properties:
Type Internal
Status Enabled
Operational Mode Write-Back
Associativity Fully Associative
Maximum Size 1024 KB
Installed Size 1024 KB
Supported SRAM Type Asynchronous
Current SRAM Type Asynchronous
Error Correction Single-bit ECC
Socket Designation Unknown
Memory Device Properties:
Form Factor DIMM
Type Detail Synchronous
Size 1024 MB
Speed 400 MHz
Total Width 64-bit
Data Width 64-bit
Device Locator J6H1
Bank Locator CHAN A DIMM 0
Memory Device Properties:
Form Factor DIMM
Type Detail Synchronous
Size 512 MB
Speed 400 MHz
Total Width 64-bit
Data Width 64-bit
Device Locator J6H2
Bank Locator CHAN A DIMM 1
Memory Device Properties:
Form Factor DIMM
Device Locator J6J1
Bank Locator CHAN B DIMM 0
Memory Device Properties:
Form Factor DIMM
Device Locator J6J2
Bank Locator CHAN B DIMM 1
any ideas?