Hi all,
 
First the specs:
 
Core i7-6800K CPU (stock speed no OC)
EVGA X99 FTW-K Motherboard (BIOS version 2.01)
EVGA SuperNOVA 850 G2 Power Supply 
EVGA GeForce GTX 1070 SC GAMING ACX 3.0 GPU
Corsair Vengeance LPX CMK32GX4M4A2400C14 (4x8gb) this is from EVGA QVL for this MB
Intel SSD 240GB
Windows 10 Pro
 
Now very occasionally it happened 2 or 3 times for the last year. I got this rig now for little over a year now and everything works great i can game for hours and hours without a hickup or any other basic task.
 
The first time i ignored it but today it happened again AFTER 5 days NOT using my game rig and its cold inside my room i checked the manual for beep codes it says: "System Timer Failure" either it has to do with the MB being faulty or RAM or USB....
I must say i am using one keyboard and one mouse for BOTH of my rigs one game rig and one that i use for work. In order to do this i am using a KVM switch sometimes i forget switching and one of the pc's post without keyboard and mouse so i need to press the KVM switch button. Before this happens most of the times i just hear the "good beeps" like a melody telling me everything is fine even without keyboard and mouse.
 
Odd thing i also get a couple of beeps cant recall exactly 3 short one long or 4 beeps on my secondary rig (asus AMD sabertooth) whenever the rig knows i have no keyboard and mouse attached since i forgot yet again to switch via KVM switch.
 
So is this really a MB failure...should it not die by now? even though i can post just fine into desktop even with the 4 beeps, just to make sure i then do hard reset it boots fine and normal restart and it boots just fine including the melody beeps telling everything is ok. Something tells me its the KVM switch causing this but i can be wrong....I'm at a loss here since i can post into desktop just fine even when this error beep thing happened for 3 or 4 times the last year since i got this rig.
 
What should i do now from here?
 
*EDIT*
 
Got the updates for W10 in which it had to restart a couple of times and no 4 beeps just the "melody" beeps that everything is ok every time it restarts. I can not replicate the 4 beeps. It only happened 3 or 4 times this year....
 
Thanks in advance.

I've had my X99 Classified beep at me before (and not the regular beeps that count the USB devices during POST). It turned out that my CMOS battery was nearly dead, and replacing it stopped the random "bad" beeps on boot. Funny thing is, the motherboard isn't all that old and needed a replacement before my X79 Dark motherboard did.
 
If your board stopped doing it then I wouldn't worry about it.

The beeps on these boards are odd to me as they aren't your usual shorter beeps from the past MBs.  I literally turned off mine and have been fine ever since.  If something should go wrong, I pay attention to the Bug LED display on the MB and go from there.  If you're booting up and everything looks n runs fine and dandy, I wouldn't worry too much tbh.

During a typical boot-up, you'll hear (if enabled in BIOS) 4 - 5 short beeps in rapid succession depending how many connected USB devices you have.  All normal.

SethH

bdary
During a typical boot-up, you'll hear (if enabled in BIOS) 4 - 5 short beeps in rapid succession depending how many connected USB devices you have.  All normal.

I believe it does this for drives you have connected too. I think it beeps when it initializes every device connected (USB + drives) because mine beeps about 10 times. 4 USB, 6 drives.

I have 5 connected USB devices, 3 SSD's, and 1 HDD.  I get 5 short beeps during boot-up.  Maybe an EVGA tech will see this thread and chime in with an answer on this.