Foxconn Motherboard A76ML-K 3.0

Hello everyone:wave
Im hoping someone here has the same motherboard who was having the same problem im having because it is driving me crazy.
The board was running perfectly for about a week then the monitor just went blank whilst i was playing a game,i fiddled with the monitor cable behind the monitor and it came back on,so i thought it was a loose connection to the monitor,the next day it happened again,this time it took longer to get on,and seemed to come back on after i ejected my usb dvd drive door.
But the pc wont come on when i start it up,just a blank screen,with onboard graphics enabled it works fine.
Anyway i wont bother you with all the different things i thought could be causing this,i ended up buying a new gfx card (Gforce 460) the same as i had bought with the mobo,but by Gigabyte,a new power supply,and still the same problem.
I can get it on after many attempts,its like it just comes on when it feels like it,i am thinking the pci express slot is the problem on the board,why does it come on sometimes and wont most of the time?
I am going to send the motherboard back on Tuesday and they will test it etc,so i thought i would check in here and see if anyone has had the same experience with the same board.
Heres a bit more info about the board if it helps:

AMD Athlon(tm) II X4 640 Processor
Chipset: AMD® 760G + SB710
Front Side Bus: 4.4 GT/s HyperTransport™
Memory: Dual channel DDR3 1600(oc)/1333/1066 x 2 DIMMs, Max. 8GB
VGA on Die: ATI® Radeon™ 3000
Expansion Slots: 1* PCIe x16, 1* PCIe x1, 2* PCI slots
IDE: 1* ATA133
Serial ATA(SATA)/RAID: 4* SATAII w / RAID 0, 1, 10
Audio: 5.1 channel HDA
LAN: Gigabit LAN
IEEE1394: N/A
Back Panel I/O Ports: 1 x PS/2 keyboard port
1 x PS/2 mouse port
1 x DVI port
1 x VGA port
1 x Audio jack supports 3 jacks
4 x USB 2.0 ports
1 x RJ45 LAN port
Internal I/O Connectors: 1 x ATX 24-Pin power connector
1 x 4-pin ATX 12V power connector
2 x 4-pin CPU / System FAN connectors
1 x ATA133 IDE connector
1 x CD-in connector
1 x Front Audio header
1 x Front Panel header
4 x USB 2.0 headers support additional 8 ports
4 x Serial ATAII connectors
1 x Intrusion Alarm header
1 x S/PDIF out header
1 x TPM header
1 x COM header
1 x Speaker
BIOS Features: 8Mb flash EEPROM w/ LAN boot PnP, ACPI, WfM,
Support CD: Drivers, Direct X, Adobe Reader, SuperUtilities, Norton Internet Security
Standards/Manageability: PCI 2.3, USB2.0, DMI 2.5
Form Factor: uATX (9.6" x 8.4")

Thanks for reading and any ideas!