I have Intel® Desktop Board D915PGN and I have a brand new video card Asus EAH5450 SILENT/DI/1GD2. No video out. I tryed video card in other PC and the card is working OK. Here on this Intel bord it doesn't. What should I check?
If he has no video out, how is he going to do that? If he cannot pass the POST, he cannot enter the BIOS.
Marco, is the system booting but no video with the video card? Is the system booting with the integrated video? Did the system work before you installed the video card? Is the PSU powerful enough to support the video card?
System specs - including kind of PSU?
All you know for sure right now is that the video card is apparently good because it works in another computer. Time for some basic and not so basic troubleshooting.
Breadboard with just motherboard, CPU & HSF, case speaker, and PSU.
Make sure you plug the CPU power cable in. The system will not boot without it.
I always breadboard a new build. It takes only a few minutes, and you know you are putting good parts in the case once you are finished.
You can turn on the PC by momentarily shorting the two pins that the case power switch goes to. You should hear a series of long, single beeps indicating memory problems. Silence indicates a problem with (in most likely order) the PSU, motherboard, or CPU. Remember, at this time, you do not have a graphics card installed so the load on your PSU will be reduced.
If no beeps: Running fans and drives and motherboard LED's do not necessarily indicate a good PSU. In the absence of a single short beep, they also do not indicate that the system is booting.
At this point, you can sort of check the PSU. Try to borrow a known good PSU of around 550 - 600 watts. That will power just about any system with a single GPU. If you cannot do that, use a DMM to measure the voltages. Measure between the colored wires and either chassis ground or the black wires. Yellow wires should be 12 volts. Red wires: +5 volts, orange wires: +3.3 volts, blue wire : -12 volts, violet wire: 5 volts always on. Tolerances are +/- 5% except for the -12 volts which is +/- 10%.
The gray wire is really important. It should go from 0 to +5 volts when you turn the PSU on with the case switch. CPU needs this signal to boot.
A way that might be easier is to use the main power plug. Working from the back of the plug where the wires come out, use a bare paperclip to short between the green wire and one of the neighboring black wires. That will do the same thing with an installed PSU. It is also an easy way to bypass a questionable case power switch.
This checks the PSU under no load conditions, so it is not completely reliable. But if it can not pass this, it is dead. Then repeat the checks with the PSU plugged into the computer to put a load on the PSU.
If the system beeps:
If it looks like the PSU is good, install a memory stick. Boot. Beep pattern should change to one long and several short beeps indicating a missing graphics card.
Silence or long single beeps indicate a problem with the memory.
Insert the video card and connect any necessary PCIe power connectors. Boot. At this point, the system should POST successfully (a single short beep). Notice that you do not need keyboard, mouse, monitor, or drives to successfully POST. At this point, if the system doesn't work, it's either the video card or an inadequate PSU. Or rarely - the motherboard's PCIe interface.
Now start connecting the rest of the devices starting with the monitor, then keyboard and mouse, then the rest of the devices, testing after each step. It's possible that you can pass the POST with a defective video card. The POST routines can only check the video interface. It cannot check the internal parts of the video card.
First I would like to thank you guys for your effort in solving this problem.
I managed to solved it and it was a strange BIOS settings. The mobo doesn't have on-board video card.
Since the PC isn't mine and I already returned it I'll try to remember what the settings in BIOS is called.
It was in some "Advanced settings" and it was like
Enable PCIe > 1
There was a warning that this settings is for test purpose, but when I enable it I got video out.
And for the arguing about how to enter the BIOS and change it's settings without video out....?
Remember that I tryed new video card in other PC?
Whell, I took out video card from that other PC and I put it in the PC in question just for entering the BIOS, then I put in new graphic card