I am trying to troubleshoot a homebuilt computer that won't boot. It has been working for about 2 years without issue but when I went to boot it today all I got was one beep ( Award BIOS and a Asus P5N-e SLI MB ) and a message on the monitor that says "No Signal". Upon opening the case the fans are spinning and the hard drive and dvd drive appear to be getting power.
I have checked all connections numerous times.
I have cleared the CMOS RTC Ram data several times.
I have tested the monitor and cables in another computer and they work fine.
I have replaced the video card and have the same issue.
I have disconnected everything except the CPU and Video card and have the same issue.
I have replaced the PSU and have the same issue.
I have removed all the RAM and received a normal POST Beep error.
I have tested with different RAM and have the same issue.
I have reseated the CPU and Heatsink and have the same issue.
I am thinking it might be the motherboard but don't know if I should be trying anything else to help isolate the problem.
Thanks in advance for any thoughts.