PC wont boot, 3 Red Lights

moofus99

Reputable
Apr 17, 2014
12
0
4,510
specs:
gpu: gvidia geforce gtx 660ti
Ram: geil 16gb 1866mhz
MOBO: Asus z87i PRO
CPU: intel i5 4670k

i built a pc with these exact specs about a month and a half ago and for a month it worked perfectly before the motherboard died and was replaced by the new one that im using in this build, upon building the system, i boot up, i get the green led on the mobo that indicates the motherboard is powered but then the red cpu led flashes on and off, the vga red led flashes on and off, and the boot red led flashes on and off, the only one not flashing is the dram led. nothing shows up on the monitor and everything appears to work perfectly in the case. the only difference between this build and the previous working one is, becuase i had to reinstall the cpu and heatsink into a new mobo i cleaned off the thermal paste and applied arctic silver 5.
only difference

thankyou!