Computer powers on, only to restart 10-15 seconds later, and continues this on a cycle.

sws21710

Honorable
Jan 16, 2014
13
0
10,510
Hello,

I have recently been trying to complete a build with an i5 6500, a Gigabyte GA H170M-D3H mobo, 1x8gb of Crucial Ballistix Sport DDR4 2666MHz, an EVGA 600B psu, and lastly an older PNY GTX660 gpu. I have tried breadboarding the system with just the RAM, mobo, CPU, and PSU, yet it will still just power on and off in cycles. I have tried connecting to a monitor via hdmi and dvi, both with and without the graphics card installed. Without the GPU I went through the on board slots, and with I used the GPU. I never received signal to the monitor. The GPU was pulled from a working system and put in storage two months ago, and the CPU and mobo were pulled from a working system last month. I am using the stock air cooler, and the RAM was purchased new. The PSU has been tested and even swapped with a working EVGA 600, and a 750 G2, but the problem persists. I have not yet reset CMOS, and will be trying that within the next day, but I am curious if the problem could be something else? I will be trying new ram along with resetting the CMOS tomorrow. I suspect that the RAM may be DOA, but will not find out until tomorrow. I do not yet have a mobo speaker so I cannot check the beep codes. I know this may be a redundant post but I was wanting to know if I may have missed something, or am not going about this the correct way.

Ftr all plugs have been seated and re-seated, CPU, mobo, and GPU all had power, all fans were spinning, but I could not get video signal and the computer continued to reset.

Thanks for any help or suggestions that may be offered!
 
Solution
The only time I ever got into a power up/power down cycle like that (that would only stop when I forced a shut down by holding down the front panel on/off button) was when the motherboard didn't like the way the cpu was inserted. Do you have a speaker hooked up? Are you getting any POST beeps? Try pulling everything off of the board except the cpu and see what happens.

mazboy

Commendable
Dec 28, 2017
823
0
1,660
The only time I ever got into a power up/power down cycle like that (that would only stop when I forced a shut down by holding down the front panel on/off button) was when the motherboard didn't like the way the cpu was inserted. Do you have a speaker hooked up? Are you getting any POST beeps? Try pulling everything off of the board except the cpu and see what happens.
 
Solution