Torn

For anyone interested, after days of scratching my head and searching the intertubes, I stumbled upon someone who had uneven pressure on a CPU cooler cause this issue. I gave my heavy as Noctua cooler a bit of support by way of a wire tied to the top of my case. Lo and behold, all is well the world again. Time will tell if it continues. but at least I'm not buying new ram for nothing.

To be clear when I said I unplugged it. I meant from the wall. I didn't remove the ram between it working and no longer working.

Was originally in 2 and 4. But yes I've tried every possible combination. 1 will work anywhere 2 will work nowhere.

My comp is a couple years old and has been running fine. I unplugged to move it and when relocated it wouldn't post. ( Not far and I'm fairly positive there was no physical damage) After trying a bunch of stuff found that it would only post with 1( either ) stick of my pair of DDR4 Vengeance 2666 8GB each. Mobo is a MSI PCMate Z170a, CPU is a 6600k. With 1 it runs fine, stress tests and benchmarks are doable, reset the bios and try 2, no post. But, after taking 1 back out again it does say that memory amount has changed. Any ideas?

I had previously reseated the vid card, and all cables with no result. Must have been a RAM issue, reseated them and have 8 successful boots. Thank you both for your response.

So every second time I power on my PC I get no post with 1 long Beep, 2 Short Beeps. According to the MSI website that is a monitor or Vid Card error. MSI Z170A PC Mate 6600k R9 390 Strix EVGA 650 Supernova P2 I have rolled back all overclocks, with no improvement. Any help or ideas would be greatly appreciated.

Just Delided my 6600k. Was 4.5Ghz 1.35v, Idle temp 33, Prime 95 Stress temp 85. Now stable at same voltage at 4.6 Ghz. Idle temp 24, Prime 95 Stress temp 64. Used to have one core that was at least 7C hotter than the others under load and having seen the crusty snot that is Intel's stock thermal compound I now understand why. Now all cores stay within 2-3C of each other. I used the Noctua NT-H1 Thermal compound that came with the NH-U14S that I use. I don't recommend voiding your warranty.

And you should really find different temp monitor software that can recognize all 6 cores.

Average is pointless,

No, you should always pay attention to individual cores. Set your OC to keep your hottest core in line with your comfort zone.

What speed do you get with the laptop plugged into router with network cable?

I'm assuming that the system can only address 4GB of total memory. 512 for your vid card, 192 for the onboard video and the remaining 3200 is usable. That only leaves another 192 unaccounted for.

This MOBO does support 4GB of RAM as will allot up to 192 MB for Video Memory. Do you by chance have a 1GB video card installed?

What OS are you using?

The 6500 is not an overclocking chip.