This is my system, -K10N780SLIX3 wifi Mobo -Gtx 260 Evga card -amd phenom II X4 3.4Ghz -6gb ram -1tb WD sata HDD -1000watt power supply. And I can not get a display anymore but it starts up fine, no beep but all the fans are going (including on GPU). HDD indicator is flashing. I've tried reseting the bios and Cmois - didnt work. changed to second Gtx 260 - didnt work using older GPu - didnt work changed dvi ports - didnt work changed cables - didnt work tried leaving it on blank screen for an 1hour to see if it would boot. - didnt work Pc worked for a year. now is stuck in limbo. any ideas???

Perhaps the monitor is faulty? Did you check that with a device known to work.

Listen to Larry though, he is the Hardware Guru here at Fixya.

So you changed everything except 1 thing, power supply. Try another power supply or power suply cord.
If it doesn't work, try another graphic card, maybe there is some shor circuit.

Hi, the thing to do here is to narrow down what could be causing the problem, initial suspects would be the RAM chips. If you have known working ones you can try in it, try these, if not, try without one, then swap them over, or even try without both.

Also, remove any components that aren't strictly necessary, i.e. hard drives & cables, cd-rom/dvd drives, extra PCI cards,network cards etc

Another suspect may be just a loose connection, try taking everything out, re-seating it. Again, pay particular attention to the RAM chips.

It could possibly even be a faulty processor, have you another you could try? Try taking it out and re-seating it.

The fact that your old Palit GT220 worked shows that your system components are NOT faulty.

The Palit GTX 260 requires the following
1) A PCI-Express 2.0 comliant motherboard.
2) Two 6 pin PCI-Express power connectors.
3) Minimum 450W or greater system power supply.

Lets break this down a little
1) You already have a motherboard that supports this card so no problem there.

2) I am unsure whether your power supply has two 6 pin PCI-Express power connectors, it should have one though and the GTX 460 package should have a molex to 6 pin PCI Express power adapter that you can use for the other.

3) Now it comes to the power supply itself. Currently your system has a 480W power supply. Through some calculating it seems that a system of this spec should have at least a 550W power supply. This means that your current power supply is 70W out. This may be why you get no signal, there is enough power for allthe other comonents but not enough left over for your GPU.

Before you go out and buy a new power supply just check that both 6 pin power connecters are firmly clipped in. If after that the card still doesn't power up then I suggest you purchase a Cooler Master Exteme power plus 550W or greater power supply.

is your system unit OEM?

Yes it will, but you'll need to update the bios to the latest one in order to be sure the processor is recognized. The 790 chipset will make that board an excellent performer with the Phenom 940. Give it as much dual channel ram as you can afford, up to the max of 4 gig for a 32 bit O/S or 64 gig for a 64 bit system.

Hi,

Have you tested the card in another machine? If the card works in another machine, the motherboard might not be compatible with the card... If the card also does not work on the 2nd machine, then it should be a fault on the card...

If the card did work in the past, and it didn't burnt or damaged, you might get it working by cleaning it with a suitable cleaner like alcohol or spirits...

Regards,

Johan

I had this exact same issue and after much head scratching replace the power switch, fixed the problem

If you want a good computer that will last for a good 5 yrs or better purchase a dell computer but make sure its a gaming computer when you do so make sure you have them build it for you max everything out

Are you hearing any beeps when you start it up?