GeForce 9600 GT Blue Screen Crash

I've upgraded my graphics card from a GeForce 8500 GT to a 9600 GT
and it crashes during the windows loading screen. The blue screen says it could be a driver or hardware installation. There is also a screen before the windows loading screen that says: AMD Data Change... Update new data to DMI! It worked the first time I used it with slight graphical errors but when I restarted my system it crashed. Ive installed new drivers for my graphics card and motherboard but nothing seems to work. Is the motherboard not compatable with GeForce 9 series? My system is as follows:

Windows Vista 32-bit SP 1
AMD Phenom 9500 Quad-Core Processor
ECS MCP61PM-GM motherboard with nVidia 430 chipset
GeForce 8500 GT
6.00 GB RAM
500 GB Hard Drive

The 8500 GT ran just fine but alas, I am a man, and as a man I must always upgrade. Any information about this problem would be helpful?

My PSU model is Delta Electronics model # DPS-300PB-3A. My PC is a Gateway Model # GT5674. 300w is probably not enough power to run the 9600 GT. I have a 550w PSU I'm going to try that now. I'll post a reply to let you know how it goes. Thanks for the input.

Specs for 9600GT

Here it shows you need a Minimum 400W psu. It's a common problem with these newer Graphics card.

You should always try to have the latest bios for your pc. Especially when adding hardware! So yes do update if there is one available. Unfortunatley I believe it's your PSU

Specs for 9600GT

"Requirements
Minimum of a 400 Watt power supply.
(Minimum recommended power supply with +12 Volt current rating of 26 Amps.)
Minimum 450 Watt for SLI mode system.
(Minimum recommended power supply with +12 Volt current rating of 28 Amps.) "




PSU specs
305W HP-P3087F3 Rev. H02 ATX Power Supply for Gateway P/N: 6506054R, 6506055R, 6506056R

Description:
Model HP-P3087F3 LF
HP P/N: 6506055R
Type ATX12V
Maximum Power 305W
Fans 1 x 80mm Fan
Input Voltage 100 - 127 V/ 200 - 240 V, 7A / 3.5A
Input Frequency Range 50 - 60 Hz
Input Current 10A 115V, 5A 230V
Output: +5V 22.0A, +12VA 18.0A, +12VB 18.0A, -12V 1A, +3.3V 17.0A, +5VFP 2.0A
MTBF 100,000 Hours

I replaced my old PSU to a BFG BFGR550WGXPSU, but it still crashes. I've ran a memory diagnostic and everything checked out fine. Anyone with any info please help.

How do I clear my cmos? I can't seem to find my northbridge drivers on the ECS website. I'm going to reinstall my Nvidia drivers just to be sure. Thanks for all of the help.