Hi, I have an A64 3000 venice cpu, 1 gb corsair ram, 6600 gt video card and my power supply blew which was an Apevia AS500W. I bought a new one and replaced it. My computer turns on and everything powers up but the GA-K8NF-9 Mobo does not beep like usual and nothing happens, also keyboard, mouse, cd rom etc does not turn on. Is that a bad motherboard problem?
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When a motherboard does not beep that isnt good news and its either the Motherboard or CPU.
Have you fot the FSB settings correct on the board?
Is your power Supply Good?
Does your graphics card need power and is it plugged in?
Unfortunately the only way to findout exactly is at fault is through a process of elimination.
Can you try a different power supply first?
Also try removing the CPU and re-seating it.
If not, then you need to try and get hold of another motherboard and see if everything works in that. If not then it could be the CPU.
Diagnosing CPU or MOTHERBOARD is always tricky without spares.
With all that power, you need a better PSU, the CPU alone draws out 125 watts, the video card can get upwards of 50, RAM takes it down another 25, and that's half of it right there. I would suggest AT MINIMUM a 700 watt PSU. Newegg has em for you (you sound like you can find what you're looking for after all those specs you've given).
I hope this helps!
I would change the timings on your RAM in bios setup pages to a slower set of numbers, especially the last one in the timing from say 12 to 15. If that doesn't help, your cool RAM chips may be slightly defective if you purchased these as a Matched Set from Corsair. And were these RAM Chips in the approved list from Asus for your system board?
Corsair has lifetime warranty for their RAM so getting those replaced shouldn't be a problem.
What you want to do is download and burn a Bart PE bootup CD that has Mem Test 86 on it and run that test on your RAM to verify that the RAM may be defective. Corsair will want to know if you have run a RAM test on those chips.
So, try the slower timing settings, even though you are not overclocking them to start with.
Also, can you put each video card on a separate power rail instead of populating one power rail with both video cards?
Lastly, you stated that you can power off, leave the system off for a half hour and the system will boot. This, as you may know, indicates something is getting hot.This could be your Power Supply or your CPU. Have you used canned air to blow out the power supply and CPU fan and heat sink?
Are you running one or two video cards?
If just one, 550w should be plenty of power. Double check ALL connections and make sure that the ram and all add-in cards are FULLY seated.
Also check to see if the video card requires its own power plug. If it does, it will have a connector on it for you to attach a lead from the power supply.
Also make sure that you have both power connectors plugged into the mainboard, theres one thats only 4 pins and then of course the larger one of 24 pins.
If all connection look good, then start with the basics. Break it down to just the power supply, mainboard, cpu, one stick of ram and the video card... unplug everything else from the mainboard including drive cables and any add-in cards. And check to make sure you processor is seated properly as well as the ram and video.
Let me know what you find.