High CPU usage after upgrading 1GB to 2GB DDR400 PC3200

Hi..
Uhmm I'm having a problem in my pc after upgrading my 1GB DDR400 PC3200 memory by adding another 1GB DDR400 PC3200.
Before I installed the new memory, loading after the bios only take 20-30 sec and the CPU usage is normal.
After installing the new memory the loading after the bios takes 2-3 mins and by just opening "my computer" the CPU usage is hitting at 100%.
I tried to install a fresh copy of my OS but still having the same problem.
Is there any incompatibility?

********
Processor: Intel(R) Pentium(R) 4 CPU 3.00GHz (2 CPUs)
Motherboard: ASUS P5RD1-VM
HDD: 320GB SATA
VCard: Radeon X550
********

Need Help. Thanks

Hi.

Update to the latest bios if you aren't running that yet.

ASUSTeK Computer Inc.

ok I'll try.

Thanks for the reply. ^_^

The BIOS is updated to 1104, but still having the same problem.

Now visit the maker of your ram modules for your specific ones. Find the Vdimm (ram voltage), frequency and timings. Set the bios accordingly.

If you need to know exact model of ram, use the spd tab of CPU-Z.

I used CPUz and this is the stats of both slot.

Imageshack - slot1
Imageshack - slot2

Try setting the Vdimm in bios to 2.65v and see how it goes.

And also, show me a screenshot of CPU-Z memory tab.

Imageshack - memn

I can't find where can I adjust Vdimm in my bios.
here is the list options of my bios.

****
Main Menu
____ Basic information about my system.

Advanced
____ USB Configuration
________ Module Version...

____ JumperFree Configuration
________ AI Overclocking

____ CPU Configuration
________ Manufacturer
________ Brand String...
________ Frequency...
________ FSB Speed...

________ Cache L1
________ Cache L2
________ Cache L3...

____ Chipset
________> Northbridge Configuration
____________ Boot graphics Adapter Priority [PEG/IGD]
____________ Current Memory Clock :200Mhz
____________ Surround view function [Disabled]
____________ UMA Framed buffered size [64MB]

_________________> Advanced NB
_______________________ DRAM 1T/2T Command [2T]
_______________________ Configure DRAM timing by SPD [Enabled]
_______________________ DRAM CAS Select [3.0 Clocks]
_______________________ DRAM tRP Select [30. Clocks]
_______________________ DRAM tRCD Select [3.0 Clocks]
_______________________ DRAM tRAS Select [8.0 Clocks]
_______________________ Refresh rate Select [7.3 us]

____________ Video Display Devices [Auto]
____________ TV Standard [NTSC]

________> Southbridge Configuration
____________ Azlia Link A [Azalia Only]
____________ Serial ATA Controller...
____________ Onboard Lan....

____ Onboard Devices Configuration
________ Serial Port Address [3F8/IRQ4]
________ Parallel Port Address [Disabled]

____ PCI Pnp
________ Plug and Play O/S [No]
________ PCI Latency Timer [64]
________ Allocate IRQ to PCI VGA [Yes]
________ Pallete Snooping [Disabled]...

Power
____ Suspend Mode [Auto]
____ Repost Video on S3 Resume [No]
____ ACPI 2.0 Support [No]
____ ACPI APIC 2.0 Support [No]

____> APM Configuration
________ Restore on AC Power Loss...

____> Hardware Monitor
________ CPU Temperature
________ MB Temperature

________ CPU Fan Speed
________ Chassis Fan Speed

________ CPU Voltage Selection [1.248v]
________ 3.3v Voltage [3.430v]
________ 5v Voltage [5.004v]
________ 12v Voltage [11.554v]

________ CPU Q-Fan Control [Disabled]

Boot
- ...

Exit
- ...

****

Not sure, but set these too:

________ CPU Voltage Selection [1.248v]
________ 3.3v Voltage [3.430v] <<< make 3.3v
________ 5v Voltage [5.004v]
________ 12v Voltage [11.554v] <<<make 12v