System won't boot after changing RAM speed in Bios, how to fix?

[cvq_07]

My system was having issues I GTA V for an unknown reason and my memory at the time only ran at 666.6mhz. As a result, I went into the BIOS on my MSI 970 g43a motherboard and changed the memory speed. My CPU throttles sometimes so I was wondering if the Memory Controller on my fx 6300 wasn't working properly. Even though the memory's rated speed was 1333mhz, I changed it to 1866mhz. In hindsight, not my best decision however at the time, I thought it would be a good idea. After that, my system stopped booting/posting and instead when turned on, it wouldn't post and only the LEDs in the case and fan, as well as the LEDs in my mouse, but not my keyboard. I am going to take it down to my local computer shop but is there anything I can do now to resolve the problem.

 

[alexoiu]

Try clearing the CMOS (unplug the power cord and remove the CMOS battery for a minute).

 

[cvq_07]

Thanks, but would I void any warranties or if I did it wrong, would I kill my electrics again? It's my first computer that I built myself and I don't intend to mess it up if I make a mistake. Again, thanks for the help.

 

[alexoiu]

No problem. No, no warranty voiding if removing the CMOS battery and no risks involved. Just make sure that you unplugged the power cord firstly.

 

[cvq_07]

What would happen to the memory. Also, would my 960 still keep the overclock that I spent the better part of 30 seconds on in MSI afterburner. Thanks.

 

[alexoiu]

The BIOS settings and CMOS would be reset. That's all.

 

[cvq_07]

Thanks, but I've looked through the manual and I can't find how to remove the CMOS battery. How would you do this or are there guides online?

 

[alexoiu]

Check on youtube for some related videos.

 

[cvq_07]

Thanks, but all that is said is to jump the CMOS like in the manual but not how to remove the battery.

 

[alexoiu]

You can also jump the CMOS. About battery, use a thin screwdriver and move a bit the elastic metal thing that keeps in place the battery:
https://www.youtube.com/watch?v=ao866I9XpTo
min 1.46

 

[cvq_07]

After I've taken the battery out and put it back in again, is there anything else?

 

[alexoiu]

No, reconnect the power cord and start the board. Make the necessary adjustments in BIOS, if POST-ing.

 

[cvq_07]

Thanks.

 

[alexoiu]

You're welcome.

 

[cvq_07]

I unplugged the computer completely, no wires coming out of the back at all, redid all of my cable management inside the computer, the took the cmos battery out then back in again the put the graphics card back in, yet whilst most of the LEDs and fans turn on, the system won't post, not even into the BIOS. Is there anything I missed?

 

[alexoiu]

Try connecting a case speaker to the motherboard. See if any beeps when starting the board without RAMs installed.

 

[cvq_07]

Already tried booting without RAM, didn't work.

 

[alexoiu]

It didn't work, of course, but is a case speaker installed, and getting any beeps?

 

[cvq_07]

Fixed it, used a scedive to jump the cmos.

 

[tcn90]

Try clearing the CMOS (unplug the power cord and remove the CMOS battery for a minute).

Hi mate, I just registered here to say thank you so much!!!!

I just built a new PC today with an ASUS X570 motherboard but after updating the BIOS and setting the RAM speed to its 3600MHz I restarted the system. But there was no output at all, everything inside the case was working fine, fans going, RGB lighting were great. But my monitor wasn't recognising anything and my keyboard and mouse weren't lighting up.

It was a panicky hour or two but after numerous frantic Google searches I finally found your comment to this guy's problem - to take out the Mobo battery, wait a minute and put it back in - I figured I would try it... and it worked!!!!
RAM is still running at 2133MHz but it's the still the latest BIOS so it was definitely upping the RAM speed which caused the blackout.

So, 5 years after your post, thanks man!!!!
Tom