Fix for slow boot issue of ASUS X-99 Motherboards

[Matrix Leader]

One my biggest gripes about my Desktop CPU which has an ASUS X-99 Motherboard is that it takes about 15 to 20 seconds from the moment you press the power button until you see the initial ASUS Splash Screen, then it takes another 10 seconds for Windows to boot.

 

I tried the latest BIOS 1801 and the previous BIOS 1702 but no luck.

 

Then I researched online and this seems like a common problem with the X-99 Chipset platform as it requires to train the memory everytime it starts up.

 

Well, since I know I have stable settings for my 64 GB of RAM using an XMP Profile of 2400MHz. I disabled the RAM Training upon every restart and this has brought the cold boot time from 20 seconds down to 5-8 seconds! Now this system is finally useable! Before that it was just a nightmare I would try to avoid restarting or shutting down just to not be staring at a black screen for so long! By the time I would see the ASUS Splash Screen other computers would have already been logged into Windows and using programs.

 

To disable RAM Training upon every restart, go to your BIOS, then go to Ai Tweaker > DRAM Timings and set your options as per the below illustrations:

 

 

[Curufinwe_wins]

Just saying, I wouldn't actually recommend doing that personally.

 

There is a reason the DRAM training is enabled by default.

[Matrix Leader]

Just saying, I wouldn't actually recommend doing that personally.

 

There is a reason the DRAM training is enabled by default.

Well I don't know what that training involved and why it needs to be done upon every restart? I thought training should be done only initially when you first install your RAM and that's it.

 

I have been using my system for 48 hours now and didn't notice any issues. I was desperate to fix this slow boot and this is what fixed it for me.

 

Your opinions are welcome offcourse

[Curufinwe_wins]

Well I don't know what that training involved and why it needs to be done upon every restart? I thought training should be done only initially when you first install your RAM and that's it.

 

I have been using my system for 48 hours now and didn't notice any issues. I was desperate to fix this slow boot and this is what fixed it for me.

 

Your opinions are welcome offcourse

If you have no issues then dw about it, but lot's of people have had issues with the platform that seem to fix itself with dram training.

 

See post #3105

http://www.overclock.net/t/1510328/asus-x99-motherboard-series-official-support-thread-north-american-users-only/3100

 

 

Dram training is basically a stress test for the ram before post if I remember correctly (while making slight adjustments if needed which can reduce and or eliminate some types of crashes based on the adjustments it makes).