computer power problem

A

ace1

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Hi everyone.

I just put a build together and have a slight problem.

Whenever I turn on the computer, it powers on for about 4 seconds, turns off, then about 4 seconds later powers on noramlly and stays on.

Does anyone know why it turns off then on when I hit the on switch?

Specs:


CPU: i5 2500k

RAM: 4Gigs.

GPU: gtx 465

PSU: 650 Watt

Motherboard: ASUS P8P67 LE B3 Intel P67 LGA1155
 

My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
Custom build
OS
64
CPU
Intel(R) Core(TM) i5-2500K CPU @ 3.30GHz
Motherboard
ASUSTeK Computer INC. P8P67 LE
Memory
4.00 GB
Graphics Card(s)
NVIDIA GeForce GTX 465
Sound Card
NVIDIA High Definition Audio
Monitor(s) Displays
1
Screen Resolution
NVIDIA High Definition Audio
Hard Drives
NVIDIA High Definition Audio
PSU
750 Watt
Way in the back of my mind I think I recall that that is a known issue on some Asus Sandy Bridge motherboards.

I'd investigate Asus support and possibly look for confirmation and/or a new BIOS to solve the issue.
 

My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
Ignatz Special; 4 speed manual gearbox; factory air conditioning; one of one
OS
Windows 7 Home Premium SP1, 64-bit
CPU
Intel Skylake i5-6600K, not overclocked
Motherboard
AsRock Z170M Extreme 4, micro ATX
Memory
8 GB HyperX DDR4-2666 (2 x 4 GB)
Graphics Card(s)
none; graphics are integrated on CPU
Sound Card
onboard: Realtek ALC1150; external: USB Behringer UF0-202
Monitor(s) Displays
Dell S2340M 23 inch IPS
Screen Resolution
1600 x 900
Hard Drives
System: Crucial MX100 series SSD, 128 GB;
Data: Samsung Spinpoint 103SJ, 1 TB;
Backup: WD Caviar Green WD30EZRX-00D8PB0, 3 TB
PSU
Rosewill SilentNight 500 watt fanless, semi-modular
Case
Antec Solo II
Cooling
Noctua NH-U12S; Noctua F12 intake, Noctua S12A exhaust
Keyboard
Microsoft 200 6JH-00001 USB
Mouse
Dell or Microsoft optical wired; USB
Antivirus
Microsoft Security Essentials and Malwarebytes Premium
Browser
Pale Moon
Other Info
All fans PWM; speeds at idle: CPU circa 500 rpm; intake circa 600 rpm; exhaust circa 600 rpm; CPU temps 27 idle and 47 C load in a warm room (27 C/81 F) when running Intel Extreme Tuning Utility stress test.
ignatzatsonic said:
Way in the back of my mind I think I recall that that is a known issue on some Asus Sandy Bridge motherboards.

I'd investigate Asus support and possibly look for confirmation and/or a new BIOS to solve the issue.
Click to expand...


Tried that, still doing the same thing.

If I just let this contiune will it mess up my other hardware such as the CPU and GPU, or is it fine enough to leave it alone?
 

My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
Custom build
OS
64
CPU
Intel(R) Core(TM) i5-2500K CPU @ 3.30GHz
Motherboard
ASUSTeK Computer INC. P8P67 LE
Memory
4.00 GB
Graphics Card(s)
NVIDIA GeForce GTX 465
Sound Card
NVIDIA High Definition Audio
Monitor(s) Displays
1
Screen Resolution
NVIDIA High Definition Audio
Hard Drives
NVIDIA High Definition Audio
PSU
750 Watt
Was there a BIOS update?

I certainly wouldn't tolerate it.

I'd Google the problem and check other support sites for others having the same issue and find out what they did to resolve it. This is not an Asus-centric forum. I'd look for an overclocker's forum as they are concentrated on Asus boards.
 

My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
Ignatz Special; 4 speed manual gearbox; factory air conditioning; one of one
OS
Windows 7 Home Premium SP1, 64-bit
CPU
Intel Skylake i5-6600K, not overclocked
Motherboard
AsRock Z170M Extreme 4, micro ATX
Memory
8 GB HyperX DDR4-2666 (2 x 4 GB)
Graphics Card(s)
none; graphics are integrated on CPU
Sound Card
onboard: Realtek ALC1150; external: USB Behringer UF0-202
Monitor(s) Displays
Dell S2340M 23 inch IPS
Screen Resolution
1600 x 900
Hard Drives
System: Crucial MX100 series SSD, 128 GB;
Data: Samsung Spinpoint 103SJ, 1 TB;
Backup: WD Caviar Green WD30EZRX-00D8PB0, 3 TB
PSU
Rosewill SilentNight 500 watt fanless, semi-modular
Case
Antec Solo II
Cooling
Noctua NH-U12S; Noctua F12 intake, Noctua S12A exhaust
Keyboard
Microsoft 200 6JH-00001 USB
Mouse
Dell or Microsoft optical wired; USB
Antivirus
Microsoft Security Essentials and Malwarebytes Premium
Browser
Pale Moon
Other Info
All fans PWM; speeds at idle: CPU circa 500 rpm; intake circa 600 rpm; exhaust circa 600 rpm; CPU temps 27 idle and 47 C load in a warm room (27 C/81 F) when running Intel Extreme Tuning Utility stress test.
I saw that with a P8P67 Pro. I have the impression that it's not uncommon with Sandy Bridge boards. I noticed that it happened when I had no power applied to the system for a while. If I shut the PC down, and did a cold boot, the double-boot did not occur.

Warning: I had two P67 boards, one an MSI P67A-GD65, the second the P8P67 Pro. Both were bricked by firmware updates. (The MSI board was a dual BIOS one. Didn't help. I updated its firware from DOS, For the Asus board, I used EZFlash.)

All of my desktop systems have been homebuilts since 1997. I tend to do BIOS updates whenever new versions are available. (Silly, but not uncommon among enthusiasts.) I've never lost a motherboard before P67.

My point is: a BIOS update may offer improvements, but the mortality rate with P67 boards seems to be much higher than for older systems.
 
Last edited:

My Computer

Computer Manufacturer/Model Number
homegrown
OS
Windows 7 Pro X64 SP1
CPU
Intel Core I7-3930k
Motherboard
Asus P9X79 Pro
Memory
16 GB Gskill DDR3-2133
Graphics Card(s)
eVGA GTX680
Sound Card
Creative X-Fi Titanium
Monitor(s) Displays
As PA246Q
Screen Resolution
1920 X 1200
Hard Drives
Corsair Force GT, 120 GB
WDC 1.5TB Caviar Black
PSU
PCP&C Silencer 750 Crossfire
Case
Silverstone FT02
Cooling
Noctua NH-D14
Keyboard
cheap Logitech USB
Mouse
Microsoft Intellimouse Explorer (old optical) USB
Internet Speed
6Mb cable
Other Info
Pioneer BDR-205
Samsung SH-203B
Monsoon 5.1 speakers
It sounds like the PSU is detecting overvoltage, this is causing the capacitors to discharge and the machine to power off. The reason it does this is the PSU detects the overvoltage and SCR's will short out across your 5 and 12 volt rails to protect your Mobo and other components from damage.

I would replace the PSU, but that is just me.
 

My Computer

OS
Windows 7 Professional x64 Backtrack 4 R2
CPU
Intel Core i5-650
Motherboard
Gigabyte P55-UD3
Memory
4 GB Geil PC3 12800
Graphics Card(s)
HIS HD 4870 X2
Sound Card
Sound Blaster X-Fi Titanium Fatal1ty Champion
Monitor(s) Displays
BenQ 22" G2220HD
Hard Drives
Seagate Barracuda 7200.12 500GB
Seagate Barracuda 7200.12 500GB
PSU
Antec High Current Gamer 620W Power Supply
Case
Thermaltake Armor+ MX
Keyboard
Microsoft SideWinder X6
Mouse
Razer Abyssus
ignatzatsonic said:
Was there a BIOS update?

I certainly wouldn't tolerate it.

I'd Google the problem and check other support sites for others having the same issue and find out what they did to resolve it. This is not an Asus-centric forum. I'd look for an overclocker's forum as they are concentrated on Asus boards.
Click to expand...

I had the most recent version for the bios. I couldnt upgrade it.

bobkn said:
I saw that with a P8P67 Pro. I have the impression that it's not uncommon with Sandy Bridge boards. I noticed that it happened when I had no power applied to the system for a while. If I shut the PC down, and did a cold boot, the double-boot did not occur.

Warning: I had two P67 boards, one an MSI P67A-GD65, the second the P8P67 Pro. Both were bricked by firmware updates. (The MSI board was a dual BIOS one. Didn't help. I updated its firware from DOS, For the Asus board, I used EZFlash.)

All of my desktop systems have been homebuilts since 1997. I tend to do BIOS updates whenever new versions are available. (Silly, but not uncommon among enthusiasts.) I've never lot a motherboard before P67.

My point is: a BIOS update may offer improvements, but the mortality rate with P67 boards seems to be much higher than for older systems.
Click to expand...

unfourtently I can not return the board, so hopefully it will last for at least a year or two.

Clinkz said:
It sounds like the PSU is detecting overvoltage, this is causing the capacitors to discharge and the machine to power off. The reason it does this is the PSU detects the overvoltage and SCR's will short out across your 5 and 12 volt rails to protect your Mobo and other components from damage.

I would replace the PSU, but that is just me.
Click to expand...

So what is it ultimately, the moterboard or the PSU?
 

My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
Custom build
OS
64
CPU
Intel(R) Core(TM) i5-2500K CPU @ 3.30GHz
Motherboard
ASUSTeK Computer INC. P8P67 LE
Memory
4.00 GB
Graphics Card(s)
NVIDIA GeForce GTX 465
Sound Card
NVIDIA High Definition Audio
Monitor(s) Displays
1
Screen Resolution
NVIDIA High Definition Audio
Hard Drives
NVIDIA High Definition Audio
PSU
750 Watt
ace1 said:
Hi everyone.

I just put a build together and have a slight problem.

Whenever I turn on the computer, it powers on for about 4 seconds, turns off, then about 4 seconds later powers on noramlly and stays on.
Click to expand...

Yup, perfectly normal for the Asus mobo. Some Gigabyte boards do that as well.

Don't worry about it, working correctly.

Regards,
GEWB
 

My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
(7 different computers booting up to 10 systems)
OS
Linux Mint / XP / Win7 Home, Pro, Ultimate / Win8.1 / Win10
Other Info
Four desktops, two laptops, one notebook and one tablet
What brand is the PSU?
 

My Computer

OS
Windows 7 Ultimate x64 SP1
CPU
Intel Core i7-2600
Motherboard
Gigabyte GA-P67A-UD3P-B3
Memory
12 GB Patriot Extreme DDR3-1333
Graphics Card(s)
Nvidia GTX 470
Monitor(s) Displays
Dell UltraSharp 2209WA
Hard Drives
OCZ Agility3 240 GB, WD5001AALS, WD7501AALS
PSU
OCZ ModStream 700W
Case
CoolerMaster HAF 912 Advanced
Cooling
CoolerMaster Hyper 212 Plus
GEWB said:
ace1 said:
Hi everyone.

I just put a build together and have a slight problem.

Whenever I turn on the computer, it powers on for about 4 seconds, turns off, then about 4 seconds later powers on noramlly and stays on.
Click to expand...

Yup, perfectly normal for the Asus mobo. Some Gigabyte boards do that as well.

Don't worry about it, working correctly.

Regards,
GEWB
Click to expand...

Makes me feel a bit better, Thanks.

DeaconFrost said:
What brand is the PSU?
Click to expand...


Ultra LSP650 650-Watt Power Supply - ATX, SATA-Ready, SLI-Ready, 135mm Fan, Lifetime Warranty w/ Registration at TigerDirect.com
 

My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
Custom build
OS
64
CPU
Intel(R) Core(TM) i5-2500K CPU @ 3.30GHz
Motherboard
ASUSTeK Computer INC. P8P67 LE
Memory
4.00 GB
Graphics Card(s)
NVIDIA GeForce GTX 465
Sound Card
NVIDIA High Definition Audio
Monitor(s) Displays
1
Screen Resolution
NVIDIA High Definition Audio
Hard Drives
NVIDIA High Definition Audio
PSU
750 Watt
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