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ASUS P5B turns on by itself

post #1 of 7
Thread Starter 
I have a ASUS P5B Deluxe with an Intel Duo Core 6600. Antec Neo HE 430 power supply. The system powers up and runs fine but when I shut down it powers down for about 5 seconds then starts back up again. I have tried every possible combination of BIOS settings, I have replaced the power supply. If I let the unit power down then toggle the power switch off for a few seconds then back on it will stay off and power on normally but if i just shut down through windows it keeps turning itself back on.

I am flashed to the latest BIOS and have tried older BIOS versions. I just don't get it.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
6600 @ 2.40GHz ASUS P5B Delux GeoForce 7900GT 2GB 
Hard DriveOSMonitorPower
6 of them ;-) XP Pro 19" Fuji Antec Neo HE 430 
Case
Antec 
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
6600 @ 2.40GHz ASUS P5B Delux GeoForce 7900GT 2GB 
Hard DriveOSMonitorPower
6 of them ;-) XP Pro 19" Fuji Antec Neo HE 430 
Case
Antec 
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post #2 of 7
Might be an unstable power supply. Did you try using one ram stick at a time?
MSI Wind
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Atom 1.6Ghz Intel® 945GSE+ICH7M UMA 1GB DDR2-667 
Hard DriveOptical DriveMonitorCase
80GB N/A 10" 1024x600 MSI Wind 
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MSI Wind
(13 items)
 
  
CPUMotherboardGraphicsRAM
Intel Atom 1.6Ghz Intel® 945GSE+ICH7M UMA 1GB DDR2-667 
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80GB N/A 10" 1024x600 MSI Wind 
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post #3 of 7
I had a similar problem with my old MSI 915P motherboard but it died before I even figured out the problem, but, usually this is caused by any number of settings in BIOS that begin with "wake on..." for instance Wake on LAN would turn the PC on if there is any activity on your network that relates to your computer and Wake on Keyboard would turn the PC on if you press buttons on your keyboard etc. disable all of these and look around the BIOS for anything else that could be the culprit and see if that solves it.

I also found that on my board, if I did start>shut down it would turn off but turn back on a few seconds later, but if I turned it off by holding the power switch it would stay off, so out of habit that's how I always turn my computers off lol.
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post #4 of 7
Have you checked to see if 'Wake on LAN' is disabled? If not it could be turning on when it detects network activity.
MainframeIII
(14 items)
 
  
CPUMotherboardGraphicsRAM
3930K Asus P9X79 Deluxe Asus R9 290X 16GB G-Skill 
Hard DriveOptical DriveOSMonitor
2x240GB Crucial SSD Raid 0 Lg DVD W7 64bit Benq 24" FP241W & 23" FP231W 
KeyboardPowerCaseMouse
G15 PC P&C Silencer 750 Thermaltake Armor Modded Rat 9 
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Asus Xonar Essence STX 
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MainframeIII
(14 items)
 
  
CPUMotherboardGraphicsRAM
3930K Asus P9X79 Deluxe Asus R9 290X 16GB G-Skill 
Hard DriveOptical DriveOSMonitor
2x240GB Crucial SSD Raid 0 Lg DVD W7 64bit Benq 24" FP241W & 23" FP231W 
KeyboardPowerCaseMouse
G15 PC P&C Silencer 750 Thermaltake Armor Modded Rat 9 
Audio
Asus Xonar Essence STX 
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post #5 of 7
You may have something plugged into the lower USB 2.0 jack thats conflicting with the infrared remote sensor feature, the usb jacks colored green you plug your digital home remote control sensor into can be bothered by some devices, I have a second wireless mouse plugged into the same jack on my p5w dh, and if I move the mouse it turns the computer on the same way my remote control does.

If you don't have any usb plugged in, I don't know what might be wrong.
    
CPUMotherboardGraphicsRAM
C2D E6600 @ 3.2ghz 458fsb Gigabyte GA-965P-S3 Vmod Evga 8800gtx @ 752 / 2028 2gb G.Skill PC6400 HZ 
Hard DriveOptical DriveOSMonitor
2x wd80 Pioneer dvd-r+ xp 22" Mitsubishi crt 1920x1440 
KeyboardPowerCaseMouse
Logitech TT Toughpower 750W Floor.... Laser 
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CPUMotherboardGraphicsRAM
C2D E6600 @ 3.2ghz 458fsb Gigabyte GA-965P-S3 Vmod Evga 8800gtx @ 752 / 2028 2gb G.Skill PC6400 HZ 
Hard DriveOptical DriveOSMonitor
2x wd80 Pioneer dvd-r+ xp 22" Mitsubishi crt 1920x1440 
KeyboardPowerCaseMouse
Logitech TT Toughpower 750W Floor.... Laser 
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post #6 of 7
Thread Starter 
Ok, thank you for all the feedback. Just to run down a few of things I have tried:

1. I tried two different power supplies
2. I tried every imaginable BIOS setting and all "wake on" options are off
3. I tried removing keyboard, mouse, etc... That was a new one but didn't work.
4. I tried different RAM

I am open for any more suggestions.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
6600 @ 2.40GHz ASUS P5B Delux GeoForce 7900GT 2GB 
Hard DriveOSMonitorPower
6 of them ;-) XP Pro 19" Fuji Antec Neo HE 430 
Case
Antec 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
6600 @ 2.40GHz ASUS P5B Delux GeoForce 7900GT 2GB 
Hard DriveOSMonitorPower
6 of them ;-) XP Pro 19" Fuji Antec Neo HE 430 
Case
Antec 
  hide details  
Reply
post #7 of 7
Sounds like you need to contact ASUS and be ready to RMA it.
    
CPUMotherboardGraphicsRAM
i7-3770k Asus Maximus IV Extreme-Z ASUS GTX 770 2x4GB Gskill Ripjaws 
Hard DriveHard DriveOptical DriveCooling
Samsung EVO 840 WD Caviar Green Sony AD-7260S-0B DVD Burner Scythe Mugen 2 Rev. B 
OSMonitorKeyboardPower
Windows 8.1 Pro x64 QNIX QX 2710 Filco Majestouch-2 Rosewill Capstone-750-M R 
CaseMouseMouse PadAudio
Zalman Z-Machine GT1000 Logitech MX518 Black Banshee Pad Krator N2-20020 (Garbage) 
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CPUMotherboardGraphicsRAM
i7-3770k Asus Maximus IV Extreme-Z ASUS GTX 770 2x4GB Gskill Ripjaws 
Hard DriveHard DriveOptical DriveCooling
Samsung EVO 840 WD Caviar Green Sony AD-7260S-0B DVD Burner Scythe Mugen 2 Rev. B 
OSMonitorKeyboardPower
Windows 8.1 Pro x64 QNIX QX 2710 Filco Majestouch-2 Rosewill Capstone-750-M R 
CaseMouseMouse PadAudio
Zalman Z-Machine GT1000 Logitech MX518 Black Banshee Pad Krator N2-20020 (Garbage) 
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Reply
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