greyclear :
dont have any idea where to start on this. computer will power up but no splash screen. LED on the board will stick at 78 or 9A. PSU was tested I removed ram sticks one by one still the same idk what else to try
asus maximus iv extreme-z
so theres no display on the screen at all? If not it can be a number of things unfortunately. This actually happened to me yesterday and now I have to get a new PSU and motherboard. Hopefully its not the same for you. Luckily I had quite the assortment of spare computer parts so by trying a large combination of things I was able to determine that the PSU was dead and the motherboard was dead. First off clear your CMOS values. To do this unplug your computer and remove the CMOS battery then wait a minute or two. Pop it back in and plug the PC in and try it. If thats not the remedy then this is what i did: I took the board out of the case to make all this easier, and what I did is just plug in the essentials: the 24 pin power to the motherboard, 4 or 8 pin power to cpu, make sure the CPU fan is plugged in, keyboard plugged in, if theres not onboard display adapter make sure your graphics card is seated correctly, and one stick of ram. (If possible try to get the power line from the front panel of your case plugged into the board so you can still use the button on the case, if you cant get it to reach then you have to start the computer by touching the positive and negative at the same time with a screwdriver) See if you post, if not try a different graphics card or pcie slot, if thats not it move the ram to a different slot, if still fail try another PSU see if you post, try the original PSU on a different computer if possible so you can determine if the PSU is the problem. A PSU can power the fans and lights but still be bad so keep that in mind. If none of that works then you might have to return some parts to the manufacturer. I understand that it is very frustrating but just relax and stay positive. I hope you find a quicker and easier solution then me, I'm been put back on the rig I built in 2006 while I wait for parts