system boots to bios properly then shuts down after about a minute, bios hardware temp monitor shows normal cpu and Mobo temp

tcminor54 · Mar 9, 2016

Hi I'm rebuilding a failed desktop system. The system failed to boot one morning with no obvious failures. I checked that the PSU was supplying power to the Mobo (Asus PWR and Reset switches are on the Mobo and illuminate when power is applied to the board) and they indicated the system had power. I have replaced the Mobo and CPU. When i try to bring up the system it goes through Post to the first prompt (press f1 to enter setup) Pressed F1 and the bios was displayed.

When I first tried this I was in the bios for about a minute and the system shut down. After it shut down the System tried to restart (Fans came on) and then failed immediately, but it continued to try and start again till I unplugged the PSU. I let the system sit for about 30 min. (I suspected that I had a problem with the CPU over heating as it was a new CPU connected to a previously installed Convair liquid CPU cooling system. When I tried to start the system again it went into the bios fine so I went to the power tab and accessed the hardware monitor, the Mobo and CPU temp monitors showed normal temps (under 40C) but once again after about a minute the system shut down again and tried to restart repeatedly till i disconnected the PSU.

Has anyone experienced this type of failure? I've been reading through the various threads and one of the threads suggested it might be a overload in the PSU. So I unplugged all drives except the boot drive, the video card and memory but had the same failure. Any suggestions would be greatly appreciated.

System specs.
CPU: Intel I7 3.0 GHz
Motherboard: ASUS P6X58D PREMIUM
Memory: 6 sticks of OCZ3G1600LV6GK 8-8-8@1.65v 2gb Per Stick
PSU: 650 Watt
HD: 2 TB WD Sata drive

Thanks for your help
Chris Minor
Sacramento

CAP33 · Mar 9, 2016

You might try clearing the CMOS if you haven't already.

tcminor54 · Mar 9, 2016

Hi Cap,
rebooted into bios, selected reset defaults and exit and save. as I was trying to save changes the system shut down again. will try again in 30 min
Chris

tcminor54 · Mar 9, 2016

ok... update, I've swapped out the power supply and it didn't change anything. I removed the memory and put it in one stick at a time... no joy. I am wondering can anyone tell me where the mother board picks up the heat report on the cpu chip? I have a liquid cooler installed, and there is no way for me to tell if A. The pump has failed, or B. It isn't getting good comductivity begtween the top of the cpu and the heat sink. This one really has me scratching my head.

CAP33 · Mar 11, 2016

I don't know why but resetting it via the motherboard jumper pins or just removing the battery to reset sometimes has a different effect then entering and defaulting bios.Go figure??I guess the only way to check the pump is to put the old cooler back on.If it does the "trying to restart"thing when your in the bios try unplugging ALL the drives and see if it stops when in the bios.Boot with only one ram chip and try it in each ram slot,repeat with each ram chip.Bad ram reeks havoc!! Hope you get this solved..if you haven't already tcminor54.

tcminor54 · Mar 14, 2016

thanks cap,
i will take your advice and get back with you. I did suspect the pump, so I swapped that out, but once again no change. I will go through the memory and try the hard reset (memory or jumper if it is available on this mother board. The Fight Continues....
Chris

tcminor54 · Mar 14, 2016

update: Ok, I check for a bios reset pins bbut none are shown, so I popped the batteruy out for 30 seconds and tryed to reboot with no memmory or video it gave the right series of beeps for no memory found. so installed 1 stick of memory. It gave me the right error beeps for no video found. a few seconds later the board shut down again with the same trying to reboot then shuts down and the cycle repeats. The thermal indicator on the new cooling showed the CPU was in the lowest temp threshold (this one has a led mounded to the cold block which changes with CPU temp. Really frustrated perhaps I have a problem in the mobo I installed to replace the one I thought was bad..
Chris

CAP33 · Mar 14, 2016

It's the P6X58D Premium your having the problems with,right Chris?If only you had another desktop about to use for testing your hardware.Problem could be from anything plugged into the board, if its no the board.Check the rear ports for damage/short.If you haven't already..which i'm sure you have,you might try the graphics card in a different slot AND..heres a link an earlier Tom's post for the same board.Good luck amigo!!

http://www.tomshardware.com/forum/272871-30-p6x58d-premium-post

tcminor54 · Mar 15, 2016

Thanks Cap, yes, I'm retired AF Tech, so I did a through search for possible shorts, I thought it might be one of my components that was causing the PSU to reset but in all the swapping I've done nothing has changed the failure. I'm really baffled... I'm beginning to think the replacement board is the problem. The original board was a ASUS PT6 but the prices on those boards on e-bay are way too high for my income. So.... I'm thinking I box it up for now a wait to see how big my tax return is and buy a new board if I can find one that supports LGA 1366. Thanks for your input, it's always good to get a second set of eyes to look at a problem in my experience. I had hoped that some one might have experienced a similar failure. But I guess not, as you are the only poster I've had.

Thanks again
Chris Minor
Sacramento

CAP33 · Apr 8, 2016

Your welcome Chris,hope you got it to GO!!

tcminor54 · Apr 14, 2016

OK Guys I'm back, was never able to find the problem and finally threw in the towel, Went to frys today and picked up an ASUS Z97-A/USB 3.1 and a 4th Gen I7 CPU (Haswell) LGA1150. I was hoping I could reuse the mem. modules from the old build till I could afford some of the current faster DDR3 or 4 mem. mods. The Memory Moduels I have are OZC Gold Series PC3 12800 2 GB sticks. The full part number is OCZ3G1600LV6GK it's listed as 8-8-8@1.65V Well OCZ isn't even listed on the QVL at Asus, with a little research I see OCZ was bought out and are only making SSD units. Can anyone with a background in Memory tell me can I run these modules safely on the new ASUS mobo? I know it says try to use mem mods under 1.65v, so is this a deal breaker? And if so, what would be my cheapest option to get some memory I can use? Doesn't need to be dirt cheap, but I'm a disabled vet living on SSDI so the pocket book squeaks every time I open it... or was that my wife *grin* if your still out there CAP what do you think?

Thanks again for all your efforts trying to help me with the rebuild. Hopefully you'll be around this evening at some point

Chris Minor
Sacramento

CAP33 · Apr 15, 2016

Hey Chris!Being its DDR3 it should work fine.The board usually takes care of the proper voltages etc.Only once i had the problem of RAM not being compatible with the machine(HP laptop).Asus boards have pretty good RAM features.I had some OCZ Gold DDR2 fail twice,thats when i found out about Toshiba buying OCZ and that they would NOT be honoring any warranty's for the older RAMs.Bummer.I usuall find good deals for RAM on Craig's List and have bought quite a bit of ram that way.Just have to give it a whirl.Worst case is it just won't work.Cheers Chris!
Clint

jasonelmore · Apr 17, 2016

@CAP33 he's referring to the voltage limit that skylake has on DRAM.. Older DDR3 ran at 1.65V.. This is the same DDR3 we used during the Nehalm days. Skylake uses ram at much much lower voltages, because the memory controller is designed that way. it prefers voltages at 1.5v or lower. Setting the voltage to 1.65 will pop up a warning in the bios about damaging the memory controller on the intel CPU.

you may be able to use that ram at 1.5v but not at full speed.

as far as your first system with failures.. it sounds like you got a short somehwere.. are you sure you have the motherboard mounted on the case properly with Stand off screws?

you can try booting the entire system with the motherboard laying on a antistatic bag, or wooden table.. That will tell us if it's a short. Also double and triple check your case PWR, HDD, HDDLED, RESET headers coming from the case, going into the motherboard.

Only hook up pwr and reset, and test with motherboard un-installed out of the case and report back.

toadhammer · Apr 18, 2016

BTW, for your first failure... One of my fans takes a while before it starts to spin up to speed. If something slow to power up like that went bad it could cause the delayed failure you saw. Don't know if you had anything flagged as ignore in your bios, but you should turn everything on. Prop up your phone and set it to record that screen so you can play the video back instead of having to sit there. Look if any of the readings that are changing. (My slow fan, for instance, I see the RPMs slowly counting up.) Also, you never mentioned the video card model....maybe you were close to the edge on having enough power. One time I added a second video card, and things were fine until the PSU degraded a little (with age). I needed to replace it with a larger model. (I think that was an immediate failure on power-on though, not a delayed one.)

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