New CPU/Mobo problem

My grandpa is installing a new CPU/Mobo on his computer. Gigabyte M61P-S3. He says he gets a post beep, the fans all spin up, but no video. Board has onboard video. The fans behave normally except when he removes the 4 pin power connector. When he removes it, the CPU fan runs at max speed. Anyone have any suggestions of what the problem could be?

 

assuming you don't have a video card. looking on page 35 in the manual, you may have to change the bios setting to set "init display first" to "onboard VGA" from the default setting of using a pci e adapter.

you might also turn onboard vga to "always on"

not sure why you would want to unplug the fan connector. the four pin power connector needs to be plugged in.

 

Have no video card on this unit, have tried resetting the bios to factory (pulled battery, etc). The beep is actually 2 short beeps.

 

I'm thinking it's a memory problem, or a CPU problem. Make sure the RAM is installed correctly and completely seated and 'clicked' in. If using more than one memory stick, remove all but one; if still no boot, swap it for another, and so on. If it's a new build, and hasn't worked yet, try removing the mobo from the case. Assemble it with RAM and CPU on your 'bench' and be sure it's completely on a non-conductive surface and see if you can video with just the RAM, CPU, and power supply; no case, no drives, no PCI cards, no keyboard or mouse; just the bare basics on the bench. If that gets video, slowly start adding parts like the keyboard and mouse first, then more RAM. Then the HD, then a CD. Double check that all the stand-offs are in the right place. An extra stand off in the wrong place will round or short the board and will prevent normal operation and may cause damage.... make sure you're power supply is strong enough. If the MB has a 24pin main power connector, be sure the power supply has 24pins also. I've seen MANY 20pin power supplies plugged into 24pin motherboards, and the owners wonder why they have stability problems...
Good luck!
And keep us posted!

 

What's a "stand off" Are those the pins that the MB sits on, and gets screwed onto? I'm thinking it's the RAM...my grandpa used the crucial memory configurator, but I've seen it wrong before. Crucial isn't on the mobo's manufacture's list of approved ram.