Use the original cables that came with the PSU and start from there.  
 
Seems there was some type of mix up.  It happens to the best of them.

Did you bump your Bios Switch on the Motherboard?
You can set the Bios Switch at a mid point between 1 & or 2 & 3 and the MB will not Post to Bios.
Also how much Memory do you have installed, the more memory the Longer it takes the X99 To Post the First time to the Bios.

arestavo

jfw06013
Well I got the motherboard some what running except that I can't get into the bios and no video out (with a known good card).
The monitor will not detect a HDMI output (27" Ben Q).
Tried all three bios using the switch, no joy.
Still no beeps and the led for error codes/temps just display the letter "C".
Where can I find a new bios chip for the motherboard (I checked eBay and other sites with no luck).

Register your X99 Classy and call or email EVGA's tech support for a free BIOS chip. They are TINY, so be careful when swapping it out. http://www.evga.com/about/contactus/ 

+1
contact support for new BIOS chip
 
Make sure all the wires are fully seated, sometimes the modular ends get tight before they are fully seated.
 
Classy CPU power (EPS) on the MB, there are two 8-pin terminals, try the other one (item 29 on page 8 & 9 in Part 1 manual)
 
Confirm RAM is fully seated in the correct slots, for the number of sticks you are using.  It is required to populate an odd
slot (1, 3, 5, 7) first.  (page 13, Part 1 manual)
 
http://www.evga.com/support/manuals/files/151-HE-E999_Part1_v2.pdf
 
 
 
Can't get into BIOS - Clear the CMOS (page 11 in Part 2 manual)
http://www.evga.com/suppo.../151-HE-E999_Part2.pdf
 
 
 
 

I check that all the power cables (and all other cables) are firmly seated.
I tried powering it up with no ram, no hard drives no video cards.
I did not pull the cpu however.
Still no beeps or codes.
 
After some testing (with the PCI-E power cable connected) the white power led comes on and the red bios led comes on, also the turbo light turn's on (if I turn it on).
None of the PCI-E led's are on and no beeps and no error codes.
No video.
 
However, if I disconnect the PCI-E power cable off the power supply (EVGA 1300W G2, known to be good) then the bios red light comes on, the white led power light comes on, the red vcc led comes on, the yellow vsm led comes on and all the pci-e red leds comes on and a red fivr led comes on (located under the cpu) as well as all the fans start spinning and the Corsair pump starts working (Corsair logo lights up).
Still no video.
 
I'm beginning to think that it's not the bios.
I'm stumped at this point.

The PSU was running just fine in another computer.
The PCIe cable was connected to the supplemental PCI-E 6 pin power connector on the bottom right of the motherboard and to the 6 pin perifi 1 on the EVGA 1300G2 power supply.
Does anyone know how to use the  Probe It Header?

jfw06013
I bit the bullet and bought another X99 Classified motherboard.
Live and learn (the hard way).!!!

How long have you had the original X99 Classified and aren't you just going to RMA it if the 2nd boards boots up fine?

jfw06013
Less than 6 months, can't register the product because I don't have the serial number (threw out the original packaging) and it's not on the motherboard.

It is also on the MB next to the PCIe Slots.

bcavnaugh you were right but the S/N was on the backside of the motherboard  and not on the front.
I only found it after pulling the motherboard from the case.

I RMA the board, EVGA support was great so far, just waiting the conformation emails.
I want to thank everybody who tried to help me, you guy's are great!

jfw06013
bcavnaugh you were right but the S/N was on the backside of the motherboard  and not on the front.
I only found it after pulling the motherboard from the case.

Odd only because mine is on the Front but glad you found yours.