My pc wont start after cpu upgrade

[zafiro3497]

HP Pavilion a6441.sc Desktop PC Product Specifications
Product release information
Product number
KP332AA
Release date
04-Mar-2008
Country/region sold in
Scandinavia
Motherboard
MCP61PM-HM (Nettle3)
Figure 1: Motherboard top view
Image of motherboard
Manufacturer: ECS
Form factor: microATX - 24.4 cm (9.6 inches) x 24.4 cm (9.6 inches)
Chipset: NVIDIA GeForce 6150SE nForce 430
Memory sockets: 4 x DDR2
Front side bus speeds: 2000MT/s (2.0 GT/s)
Processor socket: AM2+
Expansion Slots:
1 PCI Express x16 slot for graphics card
2 PCI Express x1 slots
1 PCI slot
For more details, see Nettle3 motherboard specifications .
Processor
AMD Phenom X3 8400
Figure 2: AMD Phenom 64 logo
Image of AMD logo
Operating speed: Up to 2.1 GHz
Number of cores: 3
Socket: AM2+
Bus speed: 3600 MHz HT3 (clocked down to 2000 MHz)
Processor upgrade information
Socket type: AM2+
Motherboard supports the following processor upgrades:
Phenom with Quad Core (Agena) technology (AM2+) up to 9600 (up to 95 watt TDP)
Athlon64 X2 with Dual Core technology up to 5600+ (up to 89 watt TDP)
Athlon64 less than 4000+
Sempron less than 3800+

i upgrede it wich AMD phenom hd9500wcjbgd

 

[andy_in_kenya]

Hi,

Have you confirmed whether you might need to upgrade your BIOS to a newer version to be compatible with the quad cores? Just an idea...