
PC assembly is done, now it’s time to plug in the power and turn it on.
Nothing showed up, no even a beep sound! And the CPU fan speed seems slower than normal.
Normally the 1st step for troubleshooting hardware problem is unplug RAM and all the power cable for SATA, PATA, FDD and try again. It still shows nothing and no beeping sound, damn! Without RAM, the mobo should have beeping sound, this is abnormal.
Is this motherboard or CPU die, this is 1st thing strike my mind.
The next step I took is to clear CMOS, use the clear CMOS jumper or take out the battery for few second, remember to turn off the power 1st.
Ok, this time it boot into BIOS, then I tried to shut down power and reboot, same problem happen, nothing shows up. Clear CMOS and on, shows again, hmm…. what kind problem is this?
Suddenly I remember I read through some review of this mobo two days ago at newegg site and some people were mentioning similar problem. The problem might be caused by BIOS version problem as it does not recognized AM3 CPU well.
I thought my problem was probably caused by the BIOS version problem. The method I used was to install the Windows 1st, then install ASUS update utility and flash the BIOS. During installation, PC will restart and same problem may happen again, so just clear the CMOS and get into the windows.
After I check the BIOS version, I found that it is Version 0702 dated 2009/03/17. I will need to upgrade to Version 0902 dated 2009/04/10 to get rid of the clear CMOS problem. You can download M4A78 Pro BIOS here, http://support.asus.com/download/download.aspx?SLanguage=en-us&model=M4A78%20PRO. Download it, upzip and flash it using the utility then everything will be running fine.
Thus, for people who bought this mobo and having the same problem, don’t get panic and direct bring for RMA, flash your BIOS to at least Version 0902 first.
Beside using the ASUS update utility in windows, you may flash it in BIOS as well, simply boot up PC and enter BIOS by pressing DEL button, there is a ASUS EZY Flash tool to update BIOS, you may refer here, http://support.asus.com/technicaldocuments/technicaldocuments.aspx?root=198&SLanguage=en-us, but you will need to put the BIOS rom file in Floppy.
Some people say that BIOS rom file can be put in Flash Drive but I never try that, not sure will it be detected by ASUS EZY Flash Tool.
Also remember to unzip the BIOS downloaded file, it should be in .ROM extension, else it may not be recognized.
Advice for ASUS, if there is a note or any mention in manual regarding this issue, then it would saved me at least half an hour of head scratching!
For new release of this mobo, please flash it to latest BIOS version.