GA-EP45-UD3P no sound please help

Are you not getting sound directly from the jacks on the moterboard, or is it missing from the front panel connectors? Please post the type of case (there are two kinds of audio headers; one auto-selects, the other, I believe, doesn't...

I plugged in the speakers to the rear speakers pressed the corresponding jack on the manager got sound for a quick second now its off

Are you using XP SP 2? if yes try updating to SP 3. Had the same problem and a technician told me about that. CAn also try loading windows audio driver 1st then the realtek HD audio driver. Yes load them separately.

There have been numerous instances of one jack being eiter dead, or noisy, on some of the 'd' series boards. (If I recall correctly, it's the grey jack - but I couldn't swear to it...) This is easily fixed. Change your speaker plugs around, and write down which color you've got whatever speaker pair plugged into - then go into the audio manager, and right-click on the corresponding jacks on the upper right-hand side; select "connector retasking", and you will be able to set that jack to whatever speaker pair you have plugged in there... Be aware that 5.1 designates the rear speakers as 'side' speakers - with 5.1 selected, setting any jack to 'rear' will effectively kill it!