|Okay, so the capacitors look fine. |
The bios version probably has nothing to do with your problem.
Rarely, some bios updates cure problems with certain specific ram modules, but if that isn't mentioned in the release notes for any bios update for the mboard, then that doesn't apply.
If the SAME mboard worked fine previously with the SAME ram, it makes NO SENSE AT ALL to flash the bios !
It's unlikely an improper bios setting is causing your problem - if that were the case, clearing the cmos by removing the battery would have cured your problem.
A cmos battery that is too weak or dead cannot cause your problem.
Try the no ram test.
Make sure any cards installed in mboard slots are all the way down in their slots.
Make sure you have a speaker or speakers or the equivalent connected to the mboard so you can hear mboard beeps (see your mboard manual if you need to).
Remove the AC power to the case/power supply.
Remove all the ram.
Restore AC power.
Try to boot.
If nothing else is wrong, you will get no video but you will hear a pattern of beeps that indicate no ram is installed, or a ram problem.
E.g. for an Award bios or a bios based on one, that's often a beep of about a half second, silence for a half second, a beep of about a half second, silence for a half second, continuously.
If the system DOES NOT pass the no ram test, lots of things could be wrong. A common cause is the power supply is in the process of failing.
Try another known good power supply (e.g. one from another working system) with the system, if you can.
(Power supplies often develop failing electrolytic capacitors, over time.)
If it still doesn't pass the no ram test with another known good power supply connected, the mboard is probably damaged.
If the system passes the no ram test.....
BAD ram is extremely RARE, but it's common for ram to develop a poor connection in it's slots, for the ram to not be seated properly, and less common for ram that you might think should work fine to NOT work properly because it's not 100% compatible with using it in your mboard.
Any ram slot that hasn't had ram in it for a long time is likely to have accumulated crap in the bottom of it that's hard to see - if in doubt, blow out all the ram slots, with compressed air, or with canned air or canned gas made for the purpose of cleaning up electronic boards. .
A common thing that can happen with ram, even ram that worked fine previously, is the ram has, or has developed, a poor connection in it's slot(s).
This usually happens a long time after the ram was installed, but it can happen with new ram, or after moving the computer case from one place to another, and I've had even new modules that needed to have their contacts cleaned.
See response 2 in this - try cleaning the contacts on the ram modules, and making sure the modules are properly seated:
If the SAME mboard worked fine previously with the SAME ram, there's probably nothing wrong with the ram ! You can be introducing new problems by trying ram that hasn't been used in the same mboard and found to work fine previously !
You can still have problems if any ram module is not 100% compatible with using it in your mboard.
In the worst cases of incompatibility your mboard WILL NOT BOOT all the way with it installed, and the mboard may not even beep - the ram has to be compatible with the mboard's main chipset, or in the case of recent mboards, compatible with the memory controller built into the cpu.
(The latter does not apply to this mboard.)
Try the ram modules one at a time.
Assuming you DO have a case speaker or piezo sound device connected to the mboard so you can hear mboard beeps, if you DID hear the no ram beep pattern, but you DO NOT hear the usual normal single beep that indicates the POST has completed successfully while booting when a certain ram module is installed, your mboard is NOT going to boot all the way with that ram module installed.