Results 1 to 10 of 22
-
02-13-2017 07:35 AM #1
- Join Date
- Dec 2015
- Reputation
- 10
- Posts
- 19
computer won't turn on, motherboard doesn't respond to 'start' button being pressed
I came home Friday night to my computer off. I normally leave it on and let it hibernate or whatever. When I tried to turn it on the power button did nothing. Opened the case and my Maximus Hero VIII's LEDs are all on but the 'START' button (which is illuminated) does nothing. Other components in my system which have LEDs are lit (my Kraken X61 and my Grid+ V2) but the case fans don't work (and no case LEDs light up) and my GTX 980 lights don't illuminate (though I am not 100% sure if they would light up without the system being on anyhow)
My PSU (Seasonic X750) fans don't spin up at all but this PSU has like a hybrid mode where supposedly the fan only spins up when it needs it. But I would assume it would spin somewhat at start up?
So how do I troubleshoot this? Is this possibly a motherboard issue? I'd assume PSU but I'm confused because obviously some power is happening since the LEDs on stuff all light up.
This build is just over a year old with all new components except the 980 which was a few years older (and I've since removed it anyhow while testing) and had been running trouble free since I built it (nov 2015) I hadn't made any changes to anything lately. I've never had a build fail randomly like this so I'm not sure what to do or which components to suspect. I have an old alienware system that has a PSU in it but it's not modular and is connected to so many random things in that case that it would be quite a pain to get it out to check.
-
02-13-2017 08:30 AM #2
- Join Date
- Dec 2015
- Reputation
- 10
- Posts
- 19
I just did the paper clip test and the PSU fan comes on. Now what?
-
02-13-2017 09:58 AM #3
- Join Date
- Dec 2015
- Reputation
- 10
- Posts
- 19
Used a multimeter on all the motherboard pins and the values came out fine.
1. 3.35
2. 3.35
3. 0
4. 5.04
5. 0
6. 5.04
7. 0
8. 5.04 (PWROK)
9. 5.11
10. 12.17
11. 12.17
12. 3.35
13. 3.35
14. -11.96
15. 0
16. -
17. -
18. -
19. -
20. -
21. 5.04
22. 5.04
23. 5.04
24. 0
-
02-13-2017 09:31 PM #4
- Join Date
- Dec 2015
- Reputation
- 10
- Posts
- 19
Anybody? I guess my next step is I need to get a speaker to hook up to the motherboard?
Here are the specs to my system:
i7-6700k
Asus Maximus VIII Hero
NZXT Kraken x61
Kingston Savage DDR-2400 2x8GB (in the proper slots)
EVGA GTX 980 Superclocked ACX 2.0
Seasonic 750W 80+ PSU
Samsung 950 Pro 512GB m.2 SSD (os)
Samsung 840 Pro 256GB 2.5" SSD
Western Digital 4TB HDD
NZXT H440 case
NZXT Grid+ V2 fan controller
NZXT IU01 internal usb hub
-
02-13-2017 10:47 PM #5
NemesisChild PC Specs Motherboard ASUS ROG STRIK Z490-E Processor Intel i9 10850K Memory (part number) G.Skill F4-3200C14D-32GTZR Graphics Card #1 EVGA 3090 Ti FTW3 Ultra Monitor ASUS TUF Gaming VG27AQL 1A Storage #1 WD Black SN850 1TB NVMe M.2 Storage #2 WD Blue SN550 2TB NVMe M.2 CPU Cooler Corsair H115i Pro XT Case ASUS ROG Strix Helios GX601 Power Supply EVGA SuperNova 1200 P2 Keyboard ROG Strix Scope NX Deluxe Mouse Logitech G703 Wireless Headset Logitech G Pro Mouse Pad SteelSeries OS Windows 11 Home Network Router ASUS RIG STRIK GS-AX5400
- Join Date
- Sep 2011
- Reputation
- 92
- Posts
- 1,790
Have you cleared the CMOS and tried with one stick of memory and in different slots?
Disconnect everything except one stick of memory, PSU, CPU, and hook up the monitor to the onboard GPU.Intel i9 10850K@ 5.3GHz
ASUS ROG Strix Z490-E
Corsair H115i Pro XT
G.Skill TridentZ@ 3600MHz CL14 2x16GB
EVGA RTX 3090 Ti FWT3 Ultra
OS: WD Black SN850 1TB NVMe M.2
Storage: WD Blue SN550 2TB NVMe M.2
EVGA SuperNova 1200 P2
ASUS ROG Strix Helios GX601
-
02-14-2017 02:08 AM #6
- Join Date
- Dec 2015
- Reputation
- 10
- Posts
- 19
I have tried that but I'm not sure I pressed the clear CMOS button long enough so I'll try it again tonight. I read you have to hold it 3 seconds? I'm also going to double check the 8 pin CPU PSU cable is good too since due to the positioning of my cooler (in the top) it was a little jammed in there. But like I said I haven't moved the computer or done anything with it lately, it just randomly stopped working.
I also realized I checked the PSU values without any load. What is the best way to test it with a load? Just attach a single fan or something to it?
Also does the 'START' button do the exact same thing as shorting the front end case power jumpers?Last edited by sbeacher; 02-14-2017 at 02:17 AM.
-
02-14-2017 04:06 AM #7
I would say use a power supply you know works first perhaps borrow one? Remove the cmos battery for an hour with everything disconnected. Remove any and all usb or pcie devices. Use the A2 dimm slot as indicated in the manual. See if it gets you anywhere. It sounds like the power supply has failed (hard to believe considering its a seasonic x750) but it could have been a power or heat related failure due to power surge or lightning rendering the board and power supply a total loss. Is the system on a UPS or connected strait to the wall?
-
02-14-2017 08:17 AM #8
- Join Date
- Apr 2014
- Reputation
- 10
- Posts
- 29
I believed the issue here is with the seasonic X750. ( I used to have this issue with my seasonic X1250 previously and had mine rma 3 x ). Symptom : the motherboard standby lighting remain on but when you press the power button on the casing or the motherboard will not kick start the CPU.
Workaround: (use either methods )
1. U can try pressing the ON button either from the casing or motherboard simultaneously "together" with the PSU ON/OFF button (at the back of the PSU) and somehow it will kick start the motherboard/CPU after a while (like pressing ON/OFF ON/OFF ON/OFF at the PSU together with the on button at the casing)
or
2. You power down the PSU or remove the power cord to your supply and try to plug it after 5min or so for the capacitor to drain off. Usually it will kick start the motherboard but the same problem will comes back the 2nd time you off your CPU and leave it on standby mode.
Let me know if the above works for you. if it does, then time to RMA your PSU. or change to another model or brand altogether.
-
02-14-2017 11:04 AM #9
- Join Date
- Dec 2015
- Reputation
- 10
- Posts
- 19
Alright, I have definitely cleared the CMOS and taken the memory out and tried one stick in each DIMM and nothing. Took the CMOS battery out for a while. When I hold the CMOS button down the LEDs turn off until I release it and then they light up again. I unplugged everything from the motherboard, all pcie and all usb2 and usb3 headers (my kraken no longer lights up as a result) The only thing I left plugged in was the CPU power and the 24 pin power and the fan header for the kraken on W_PUMP. And I did leave the m.2 SSD in the slot on the motherboard. My PSU fan does not spin when just plugged in to the motherboard. However, as I mentioned before if I short it with a paper clip it works and all the voltages are correct on my multimeter.
I live in Los Angeles. Lightning doesn't exist here. The computer is plugged into a Belkin surge protector (one of the more expensive ones)
Why do you guys think it's the PSU if the PSU passes all the other tests? I'm starting to suspect it's the motherboard.
I have a speaker on the way from amazon to plug into the motherboard to see if it beeps at all.Last edited by sbeacher; 02-14-2017 at 11:22 AM.
-
02-14-2017 12:09 PM #10
JustinThyme PC Specs Laptop (Model) G752VY-DH72 Motherboard Rampage VI Extreme Processor I9 9940X Memory (part number) 64GB DDR4 8x8 Corsair Dominator Platinum 3800 MHz @ C17 Graphics Card #1 ASUS Strix 2080Ti O11G @ 2.1GHz Graphics Card #2 ASUS Strix 2080Ti O11G @ 2.1Ghz Graphics Card #3 ROG Nvlink Graphics Card #4 Have to feed animals Sound Card External Audioengine D1 24 bit 192kbps DAC Monitor ASUS PG348Q @ 100Hz Storage #1 Intel 905P 480GB U2 flavor Storage #2 Samsung 850 EVO 1TB X2 in RAID 0, 960 PRO 1TB DIMM.2_1 CPU Cooler HeatKiller IV PRO and VRM blocks ,Dual D5 PWM serial, 2X 480, 1X 360 RADS Case Phanteks Enthoo Elite 8X LL120 PWM, 3X LL140 PWM, 12 SP120 PWM 1x AF140 PWM Power Supply Corsair AX 1500i Keyboard ASUS Claymore Mouse ASUS Spatha, Logitech MX Master Headset Sennheiser HD 700 Mouse Pad ASUS ROG Sheath Headset/Speakers Audioengine A5+ with SVS SB-1000 Sub OS Win10 Pro 1809 Network Router NetGear NightHawk X10 Accessory #1 NetGear Prosafe 10GBe Switch Accessory #2 Qnap TVS-682 NAS modded with I7 CPU
- Join Date
- Nov 2013
- Reputation
- 144
- Posts
- 3,854
Your best bet is to wait for the speaker to get the beep codes. Most of the time if you succeed with installing a jumper across the PSU power up pins and get volts out it's NOT the PSU. Nothing gets "Kick Started".*
There are actually a lot of causes that could stop your machine from posting, just have to narrow it down and sounds like you have a good start. *Could be ram, CPU or MOBO at this point. The beep codes are an invaluable tool. The newer boards with Qcodes are even better. You may not have lightning much in SoCal but having worked there in the Critical power industry there are plenty of grid issues! The grid wasn't planned out very well in its infancy and now there are just too many darn people there. I learned my lesson to stay off the freeway after getting stuck on the 405 and 5 more than once for hours on end and this was just congestion, no accidents. Only place I've been pulled over for going 75 in a 55 because I was going too slow and ticketed for "impeding the flow of traffic". Where I come from you go 20 over you are going to jail for wreck less driving. Not there! I was in the far right lane going 75 with cars blowing my doors off! Far left lane was approaching 100 mph. After all that I just stayed on local roads. No trouble and you actually get from A to B faster during peak traffic!
Good luck *