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PC turned off and wont boot

post #1 of 31
Thread Starter 
hi there guys,

I was just idle'ing around on my pc last night when it turned itself off and then back on again. But once it came back on, the case fans ( I think ) were spinning very loudly and the monitor would not come on.

I tried to work out which fans it is that is spinning very loudly and im sure its the case fans, but I guess it could be the power supply fan also, but im pretty sure its the case fans.

ive already had to replace a corsair 750tx with another one, do you think this newer power supply has died again?? or is it likely to be the motheboard ( DFI lan party )

The power supply does seem to have accumulated a lot of dust inside it, so im wondering if it has maybe overheated

any suggestions guys?
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Q6600 @ 3.2ghz (400x8) DFI Lan Party DK-X48 Sapphire HD 4870 4gig OCZ 1066mhz 
Hard DriveOSMonitorPower
500gig Seagate 702.11 Vista/XP Dual boot Acer 22" and Optoma HD65 Projector 750w Corsair 
Case
Antec Twelve Hundred 
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Q6600 @ 3.2ghz (400x8) DFI Lan Party DK-X48 Sapphire HD 4870 4gig OCZ 1066mhz 
Hard DriveOSMonitorPower
500gig Seagate 702.11 Vista/XP Dual boot Acer 22" and Optoma HD65 Projector 750w Corsair 
Case
Antec Twelve Hundred 
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post #2 of 31
are you sure its the case/power supply fan?
maybe its the cpu fan?

does any part of your computer feel extremely hot?
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD Phenom II x4 965 c3 GA-790XTA-UD4 6870 G.skill 2x2gb 
Hard DriveOptical DriveOSMonitor
G.Skill Phoenix Pro 120gb not sure atm Win 7 Pro Acer x213h 
KeyboardPowerCaseMouse
Logitech G11 OCZ 600w CM 690 Logitech G9 
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD Phenom II x4 965 c3 GA-790XTA-UD4 6870 G.skill 2x2gb 
Hard DriveOptical DriveOSMonitor
G.Skill Phoenix Pro 120gb not sure atm Win 7 Pro Acer x213h 
KeyboardPowerCaseMouse
Logitech G11 OCZ 600w CM 690 Logitech G9 
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post #3 of 31
Lots of times the fans are at full load because the motherboard has not kicked into the BIOS yet. Meaning either your motherboard or cpu could have died. Rare that a cpu just up and dies so motherboard would be first point to check. But could be one of many things. Try unplugging PSU cord for 1 minute then plug back in and try to boot.
post #4 of 31
Thread Starter 
I guess its possible its the cpu fan yeah, but the noise is that loud its too difficult to distinguish which fan it is. But yeah, good chance it's the cpu fan. What would that suggest? my temps were sitting around 30-45c (perhaps 50ish on load) with my 3ghz overclock.

I havent noticed any part of the pc being hot, although I havent investigated too much, didnt seem to be any burning smells either that I can recall
Edited by scottish_jason - 3/23/11 at 1:32am
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Q6600 @ 3.2ghz (400x8) DFI Lan Party DK-X48 Sapphire HD 4870 4gig OCZ 1066mhz 
Hard DriveOSMonitorPower
500gig Seagate 702.11 Vista/XP Dual boot Acer 22" and Optoma HD65 Projector 750w Corsair 
Case
Antec Twelve Hundred 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Q6600 @ 3.2ghz (400x8) DFI Lan Party DK-X48 Sapphire HD 4870 4gig OCZ 1066mhz 
Hard DriveOSMonitorPower
500gig Seagate 702.11 Vista/XP Dual boot Acer 22" and Optoma HD65 Projector 750w Corsair 
Case
Antec Twelve Hundred 
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Reply
post #5 of 31
To isolate fan noise, I slow down a fan speed with my finger by placing it in the middle and pressing slowly. It's probably not good for the fan, so its up to you.

If after it still wont come up, maybe resetting your cmos would help?
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD Phenom II x4 965 c3 GA-790XTA-UD4 6870 G.skill 2x2gb 
Hard DriveOptical DriveOSMonitor
G.Skill Phoenix Pro 120gb not sure atm Win 7 Pro Acer x213h 
KeyboardPowerCaseMouse
Logitech G11 OCZ 600w CM 690 Logitech G9 
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD Phenom II x4 965 c3 GA-790XTA-UD4 6870 G.skill 2x2gb 
Hard DriveOptical DriveOSMonitor
G.Skill Phoenix Pro 120gb not sure atm Win 7 Pro Acer x213h 
KeyboardPowerCaseMouse
Logitech G11 OCZ 600w CM 690 Logitech G9 
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post #6 of 31
does it boot without the overclock? i mean have you tried clearing cmos?

most gpu fans spin up like crazy for a couple seconds shortly after pressing the power button, how about yours?
post #7 of 31
Could be a number of things.

*If the case fans are spinning then i doubt the power supply has killed its self.

*Maybe your graphics card has commited suicide? is its fan spinning?

*Motherboard may have died.

*Power supply could have overheated and went into a cooldown mode *hence the loud fan noise, but 750W the powersupply should not have been even hot with a system setup like that.

*hard drive may have failed.

*cpu has a high clock, could have died, but under no load doubt it.
 
Black Dragon
(27 items)
 
Jumper V2.0
(13 items)
 
CPUMotherboardGraphicsRAM
AMD 1800X ASUS Crosshair 6 Auorus 1080TI G.Skill TridentZ 4000mhz 
Hard DriveHard DriveCoolingOS
Samsung 850 EVO 1TB Western Digital 4TB Black NZXT Kracken X52 Windows 10 x64 
MonitorKeyboardPowerCase
Haier 55"4k TV Logtech Wireless Garbage Corsiar 850RMI Fractal Design Define C 
MouseAudio
Roccat Krone Pure Fostex Modded V3 Mayflower Electrics 
CPUMotherboardGraphicsGraphics
i7 4770k [4.5@1.3V] Asus ROG Formula VI GTX 780 [1201/1722] GTX 780 [1201/1722] 
RAMHard DriveHard DriveOptical Drive
Dominator Plat 16GB 1866C9@1.5v Samsung 840 250GB Pro Seagate SSHD 2TB N/A 
CoolingCoolingCoolingCooling
22 stickle flow Fans Black ice 480 Black ice 240 2 D5 pumps running two loops 
OSMonitorMonitorMonitor
Windows 7 Ultimate G2420HD[OC 70Hz] KVM1 G2420HD[OC 70Hz] KVM2 G2420HD[OC 70Hz] KVM3 
MonitorMonitorMonitorMonitor
X-Star DP2710[OC 110Hz] KVM1 X-Star DP2710[OC 110Hz] KVM2 X-Star DP2710[OC 110Hz] KVM3 Kogan 46" 3D TV KVM4 
MonitorKeyboardPowerCase
Samsung SyncMaster 2333SW KVM4 Strike 7 OCZ Fatality 1000w Azza Genesis 9000B 
MouseMouse PadAudio
Roccat Krone XLD, RAT7 Razor Astro A40, Audio-Technica ATH-AG1 
CPUMotherboardGraphicsRAM
i7 920@ 3.8GHz HT ON EVGA 762 (4-way sli) Dual 8 Pin cpu EPS Connectors 4 GTX 480 sli 12Gb G.Skill Sniper 1600 @ 1633Mhz 
Hard DriveOptical DriveOSMonitor
SSD:Inferno 60, 4 F3 Spinpoint in 2 Raid 0 Arrays Blueray/Dvd Win 7 64 bit Ultimate 3 BENQ 2420 HD 24" Monitors in Nvidia Surround 
KeyboardPowerCaseMouse
Logitech G110 Gaming Silverstone Strider 1500W Thermaltake Armor+ BWS 6000 R.A.T.7 Gaming 
Mouse Pad
CS Storm 
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Black Dragon
(27 items)
 
Jumper V2.0
(13 items)
 
CPUMotherboardGraphicsRAM
AMD 1800X ASUS Crosshair 6 Auorus 1080TI G.Skill TridentZ 4000mhz 
Hard DriveHard DriveCoolingOS
Samsung 850 EVO 1TB Western Digital 4TB Black NZXT Kracken X52 Windows 10 x64 
MonitorKeyboardPowerCase
Haier 55"4k TV Logtech Wireless Garbage Corsiar 850RMI Fractal Design Define C 
MouseAudio
Roccat Krone Pure Fostex Modded V3 Mayflower Electrics 
CPUMotherboardGraphicsGraphics
i7 4770k [4.5@1.3V] Asus ROG Formula VI GTX 780 [1201/1722] GTX 780 [1201/1722] 
RAMHard DriveHard DriveOptical Drive
Dominator Plat 16GB 1866C9@1.5v Samsung 840 250GB Pro Seagate SSHD 2TB N/A 
CoolingCoolingCoolingCooling
22 stickle flow Fans Black ice 480 Black ice 240 2 D5 pumps running two loops 
OSMonitorMonitorMonitor
Windows 7 Ultimate G2420HD[OC 70Hz] KVM1 G2420HD[OC 70Hz] KVM2 G2420HD[OC 70Hz] KVM3 
MonitorMonitorMonitorMonitor
X-Star DP2710[OC 110Hz] KVM1 X-Star DP2710[OC 110Hz] KVM2 X-Star DP2710[OC 110Hz] KVM3 Kogan 46" 3D TV KVM4 
MonitorKeyboardPowerCase
Samsung SyncMaster 2333SW KVM4 Strike 7 OCZ Fatality 1000w Azza Genesis 9000B 
MouseMouse PadAudio
Roccat Krone XLD, RAT7 Razor Astro A40, Audio-Technica ATH-AG1 
CPUMotherboardGraphicsRAM
i7 920@ 3.8GHz HT ON EVGA 762 (4-way sli) Dual 8 Pin cpu EPS Connectors 4 GTX 480 sli 12Gb G.Skill Sniper 1600 @ 1633Mhz 
Hard DriveOptical DriveOSMonitor
SSD:Inferno 60, 4 F3 Spinpoint in 2 Raid 0 Arrays Blueray/Dvd Win 7 64 bit Ultimate 3 BENQ 2420 HD 24" Monitors in Nvidia Surround 
KeyboardPowerCaseMouse
Logitech G110 Gaming Silverstone Strider 1500W Thermaltake Armor+ BWS 6000 R.A.T.7 Gaming 
Mouse Pad
CS Storm 
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post #8 of 31
Thread Starter 
Quote:
Originally Posted by cmos View Post
To isolate fan noise, I slow down a fan speed with my finger by placing it in the middle and pressing slowly. It's probably not good for the fan, so its up to you.

If after it still wont come up, maybe resetting your cmos would help?
thanks guys, I will try the above suggested and try find out which fan it is now. Also I will try and reset the cmos, have to take my graphics card out in order to get into the reset cmos jumper, arg!
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Q6600 @ 3.2ghz (400x8) DFI Lan Party DK-X48 Sapphire HD 4870 4gig OCZ 1066mhz 
Hard DriveOSMonitorPower
500gig Seagate 702.11 Vista/XP Dual boot Acer 22" and Optoma HD65 Projector 750w Corsair 
Case
Antec Twelve Hundred 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
Q6600 @ 3.2ghz (400x8) DFI Lan Party DK-X48 Sapphire HD 4870 4gig OCZ 1066mhz 
Hard DriveOSMonitorPower
500gig Seagate 702.11 Vista/XP Dual boot Acer 22" and Optoma HD65 Projector 750w Corsair 
Case
Antec Twelve Hundred 
  hide details  
Reply
post #9 of 31
you could also pull the small battery out if its easier to reach. remember to kill the psu power switch before you do it
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD Phenom II x4 965 c3 GA-790XTA-UD4 6870 G.skill 2x2gb 
Hard DriveOptical DriveOSMonitor
G.Skill Phoenix Pro 120gb not sure atm Win 7 Pro Acer x213h 
KeyboardPowerCaseMouse
Logitech G11 OCZ 600w CM 690 Logitech G9 
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD Phenom II x4 965 c3 GA-790XTA-UD4 6870 G.skill 2x2gb 
Hard DriveOptical DriveOSMonitor
G.Skill Phoenix Pro 120gb not sure atm Win 7 Pro Acer x213h 
KeyboardPowerCaseMouse
Logitech G11 OCZ 600w CM 690 Logitech G9 
  hide details  
Reply
post #10 of 31
To be sure if it's the case fan, just unplug it and see if there's still that loud noise, if there is then it's another one. Anyway I would think it's the GPU fan, mine always spin at 100% just for a few seconds just before the BIOS screen appear, if your CPU or motherboard is dead then maybe your GPU is bblocked in that start-up phase so the fan will continue to spin at full speed.
My System
(16 items)
 
  
CPUMotherboardGraphicsRAM
4790K Asus Z97 Pro Sapphire Radeon R9 290 4GB Tri-X 16GB GSkil 2133MHz 
Hard DriveHard DriveOptical DriveCooling
Seagate 2TB 2000DM001 Seagate 3TB 3000DM001 Plextor PX891SA NH-C12P 
OSMonitorKeyboardPower
Windows 7 64bit Iiyama XB2783HSU Microsoft Digital Media Keyboard 3000 Corsair TX750W 
CaseMouseAudio
Lancool K62 Logitech G500 Xonar DX 
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My System
(16 items)
 
  
CPUMotherboardGraphicsRAM
4790K Asus Z97 Pro Sapphire Radeon R9 290 4GB Tri-X 16GB GSkil 2133MHz 
Hard DriveHard DriveOptical DriveCooling
Seagate 2TB 2000DM001 Seagate 3TB 3000DM001 Plextor PX891SA NH-C12P 
OSMonitorKeyboardPower
Windows 7 64bit Iiyama XB2783HSU Microsoft Digital Media Keyboard 3000 Corsair TX750W 
CaseMouseAudio
Lancool K62 Logitech G500 Xonar DX 
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