AMD Phenom-II is installed in Asus M4A78LT-MLE motherboard. While system is booting showing error message -" This CPU is not supported by this model. Please check CPU QVL on Asus website" Please assist me how to solve the problem.

I think this website describes the fix for your problem, please check here

Hi, you can see the list here:

http://www.asus.com/Motherboards/AMD_AM2Plus/M2N68AM/#specifications

At this site you also find drivers.
Remember to select your operating system

AMD Socket AM2+ / AM2 Processors
for AMD Phenom™ FX / Phenom / Athlon™ / Sempron™
AMD Cool 'n' Quiet™ Technology
AMD64 architecture enables simultaneous 32-bit and 64-bit computing
Support 45nm Phenom™ II CPU Chipset NVIDIA Geforce 7025/nForce 630a
System Bus 2000/1600 MT/s Memory 2 x240-pin DIMM, Max. 4 GB, DDR2 1066/800/667/533 ECC,Non-ECC,Un-buffered Memory
Dual Channel memory architecture
*DDR2 1066 is supported by AM2+ CPU only Expansion Slots 1 x PCIe x16
1 x PCIe x1
2 x PCI
Storage Southbridge
4 xSATA 3 Gb/s ports Support RAID 0,1,5,10,JBOD

ATAPI support ,AHCI mode
LAN RTL8211CL Phy Gigabit LAN Audio ALC662 High Definition Audio 6 -Channel CODEC
USB 10 USB 2.0 ports (4 on back I/O, 6 on board)
AMD Socket AM2+ / AM2 Processors
for AMD Phenom™ FX / Phenom / Athlon™ / Sempron™
AMD Cool 'n' Quiet™ Technology
AMD64 architecture enables simultaneous 32-bit and 64-bit computing
Support 45nm Phenom™ II CPU Chipset NVIDIA Geforce 7025/nForce 630a
System Bus 2000/1600 MT/s Memory 2 x240-pin DIMM, Max. 4 GB, DDR2 1066/800/667/533 ECC,Non-ECC,Un-buffered Memory
Dual Channel memory architecture
*DDR2 1066 is supported by AM2+ CPU only Expansion Slots 1 x PCIe x16
1 x PCIe x1
2 x PCI
Storage Southbridge
4 xSATA 3 Gb/s ports Support RAID 0,1,5,10,JBOD

ATAPI support ,AHCI mode
LAN RTL8211CL Phy Gigabit LAN Audio ALC662 High Definition Audio 6 -Channel CODEC
USB 10 USB 2.0 ports (4 on back I/O, 6 on board)
AMD Socket AM2+ / AM2 Processors
for AMD Phenom™ FX / Phenom / Athlon™ / Sempron™
AMD Cool 'n' Quiet™ Technology
AMD64 architecture enables simultaneous 32-bit and 64-bit computing
Support 45nm Phenom™ II CPU Chipset NVIDIA Geforce 7025/nForce 630a
System Bus 2000/1600 MT/s Memory 2 x240-pin DIMM, Max. 4 GB, DDR2 1066/800/667/533 ECC,Non-ECC,Un-buffered Memory
Dual Channel memory architecture
*DDR2 1066 is supported by AM2+ CPU only Expansion Slots 1 x PCIe x16
1 x PCIe x1
2 x PCI
Storage Southbridge
4 xSATA 3 Gb/s ports Support RAID 0,1,5,10,JBOD

ATAPI support ,AHCI mode
LAN RTL8211CL Phy Gigabit LAN Audio ALC662 High Definition Audio 6 -Channel CODEC
USB 10 USB 2.0 ports (4 on back I/O, 6 on board)
2 x240-pin DIMM, Max. 4 GB, DDR2 1066/800/667/533 ECC,Non-ECC,Un-buffered Memory
Dual Channel memory architecture
*DDR2 1066 is supported by AM2+ CPU only

1 x PCI-E x16 Graphic card slot.

you cannot use m4a78t-e to amd phenom x4 9650 because it does not support am2+ socket, it only support am3,phenom II,sempron 100, and athlon II processor.

It sounds like you have upgraded from another board to the M4A78LT-MLE and you have not reinstalled windows. If this is the case then are going to have terrible troubles with drivers and lock ups. Believe me, reinstall windows a fresh then install your drivers then windows updates and all will be well. Oh by the way use the asus site for the latest drivers and not those on the disk that came with the motherboard.

Hi you need to update the bios :-)
Regards

check make sure you install all the components correctly especially the processor.
Please let me know if you need further help. you can keep in touch my me just click here.

Click here to view the list of supported processors for the ASUS M4A78LTM LE Mainboard.

The AMD AM3 Phenom 2 X4 965 3.4GHz is not supported as it is a 125Watt or 140Watt Processor.

The ASUS M4A78LTM LE Mainboard supports up and including a 95Watt Processor.

Therefore you either need to downgrade, purchase a Processor that is supported as shown in the list or purchase a Mainboard that supports your AMD AM3 Phenom 2 X4 965 3.4GHz Processor.

I myself would go for an ASUS M4A88TD-V EVO/USB3 Mainboard, its a good companion for that monster of a Processor you have got.

See if you are able to return the Mainboard and purchase the ASUS M4A88TD-V EVO/USB3
Click here for it's Specs.

There is also the cheaper ASUS M4A785TD-V EVO
Click here for it's Specs.

Tell me how it goes!

All the Best!
damnor01

No. the Motherboard only Supports Phenom II X3, Phenom II X4.

http://www.superwarehouse.com/ASUS_M4A78T-E_Motherboard/M4A78T-E/ps/1559879

The following link loads the overview of the ASUS M4N78-AM board. To get to the CPU support list, click the "CPU Support List" Tab:

ASUS M4N78-AM CPU Support

Note: BIOS revision 0901 is not correct for Phenom processors. Nor can I find your exact cpu listed.

Supports: AM2+ Quad-Core CPU/AM2 CPU and 45nm Phenom? II CPU Here is the complete list; your CPU is not listed. http://usa.asus.com/product.aspx?P_ID=2UWzsrOiRbMPGYpw