New Power Supply and PC won't Boot - Techist - Tech Forum

Go Back   Techist - Tech Forum > Computer Hardware > Hardware Repairs and Troubleshooting
Click Here to Login
Closed Thread
 
Thread Tools Display Modes
 
Old 03-02-2009, 04:19 PM   #1 (permalink)
Newb Techie
 
Join Date: Mar 2009
Posts: 8
Unhappy New Power Supply and PC won't Boot

I have recently got a new PSU for my computer so i could put another GPU in (8800 GTX SLI) and after installing the new PSU the computer simply wont boot. Upon hitting the power button all the case and gpu fans start spinning but the CPU fan (a Zallaman) wont fire up and the monitor says there is no input signal (even the mother board bios wont launch). The interesting thing is that upon hitting the power button again to turn the system off the zallaman cpu fan lights up (LED) and spins for just a second before the whole system stops. I put in the old power supply and removed the new card to return the computer to its previous functioning state to find the same exact results: no cpu fan and input... What could have gone wrong? My step-dad thinks the processor died, plausible? Thanks in advance

specs:

900 Watt Topower PowerBird
2x 8800 GTX
Intel Q6600
EVGA 680i LT sli motherboard
4 gigs Crucial Ram
__________________

CoH Addict is offline  
Old 03-02-2009, 04:21 PM   #2 (permalink)
Lord Techie
 
Hefemeister's Avatar
 
Join Date: Feb 2004
Location: Sweden
Posts: 9,093
Default Re: New Power Supply and PC won't Boot

did you make sure and plug both power plugs into the motherboard?
__________________

__________________
ASUS P6T Deluxe V2 :: INTEL i7 920 @3.4 :: XFX GTX260 :: 6gb Corsair 1600 :: Corsair 750TX :: TRUE 120 :: Samsung T240 24" :: Windows 7 X64

I do not accept support questions via PM

"Those who would give up essential liberty to purchase a little temporary safety deserve neither liberty nor safety."
Hefemeister is offline  
Old 03-02-2009, 04:22 PM   #3 (permalink)
Newb Techie
 
Join Date: Mar 2009
Posts: 8
Default Re: New Power Supply and PC won't Boot

Yup, spent about 2 hours looking at all the cables hoping to find something unconnected
CoH Addict is offline  
Old 03-02-2009, 06:14 PM   #4 (permalink)
Newb Techie
 
Join Date: Feb 2009
Posts: 24
Default Re: New Power Supply and PC won't Boot

Quote:
Originally Posted by CoH Addict View Post
I have recently got a new PSU for my computer so i could put another GPU in (8800 GTX SLI) and after installing the new PSU the computer simply wont boot. Upon hitting the power button all the case and gpu fans start spinning but the CPU fan (a Zallaman) wont fire up and the monitor says there is no input signal (even the mother board bios wont launch). The interesting thing is that upon hitting the power button again to turn the system off the zallaman cpu fan lights up (LED) and spins for just a second before the whole system stops. I put in the old power supply and removed the new card to return the computer to its previous functioning state to find the same exact results: no cpu fan and input... What could have gone wrong? My step-dad thinks the processor died, plausible? Thanks in advance

specs:

900 Watt Topower PowerBird
2x 8800 GTX
Intel Q6600
EVGA 680i LT sli motherboard
4 gigs Crucial Ram

Well recently I had a similar problem which i posted on here. It was indeed a bad power supply. I tried my old power supply and it didnt work so orginally I thought it was the Motherboard. So I sent that back and got a new one and same exact thing. The only things that would light up are the lights by the proc plug and the fans would turn only slightly. So I said screw it let me go get this tested out and see what could be the problem.
It was indeed a bad power supply. My only thought about the other power supply not working was in my haste to put the power supply in and test that maybe i crossed wires or something so it did not work for whatever reason. I would check the power supply and make sure it is not that first and foremost. I very well doubt it is a processor problem because of the fact that you did not even mess with it correct? The only way it would have fried the proc was if it overloaded it with power and from my understanding if that would have happened you would have known.
Either A) test your PSU yourself by using a voltmeter
or B) go have it tested by those PSU checkers.
I would be willing to bet it is the PSU that you got and it was DOA.
KevinH is offline  
Old 03-03-2009, 12:14 PM   #5 (permalink)
Newb Techie
 
Join Date: Mar 2009
Posts: 8
Default Re: New Power Supply and PC won't Boot

Hmmm doesn't seem to be very likely as everything else is receiving power just fine (motherboard, GPUs and case fans) well at least these bits move and light up.... CPU was over clocked in the old setup but i reset it to stock before putting in the new PSU
CoH Addict is offline  
Old 03-03-2009, 12:18 PM   #6 (permalink)
Lord Techie
 
hikaricloud's Avatar
 
Join Date: Jul 2005
Location: USA
Posts: 6,220
Default Re: New Power Supply and PC won't Boot

Highly unlikely the CPU died. If I had to guess, it would be a dead PSU. And it doesn't matter if everything else gets power, if a rail on the main power connector isn't working, then it won't boot.
__________________
R.I.P. Ronald C. "Bucky" Buck
3/13/1949 - 11/30/2010
Poizen22 - in all honesty id prefetr my pics get passed around then send perform some homo erotic sexual deed.
thirdshiftdj - what on earth are you trying to say???
I do not accept support questions via EMail, PM or IM.
If I helped you out, or what I just said rocked you like a hurricane, hit the little thingie over there.
<-------------------------------
hikaricloud is offline  
Old 03-03-2009, 12:26 PM   #7 (permalink)
Newb Techie
 
Join Date: Mar 2009
Posts: 8
Default Re: New Power Supply and PC won't Boot

But how would that account for the old PSU not working?
CoH Addict is offline  
Old 03-03-2009, 12:28 PM   #8 (permalink)
Lord Techie
 
hikaricloud's Avatar
 
Join Date: Jul 2005
Location: USA
Posts: 6,220
Default Re: New Power Supply and PC won't Boot

Dunno, maybe the new dead PSU blew your mobo. It's possible, but it's really hard to tell without getting a look at it...
__________________
R.I.P. Ronald C. "Bucky" Buck
3/13/1949 - 11/30/2010
Poizen22 - in all honesty id prefetr my pics get passed around then send perform some homo erotic sexual deed.
thirdshiftdj - what on earth are you trying to say???
I do not accept support questions via EMail, PM or IM.
If I helped you out, or what I just said rocked you like a hurricane, hit the little thingie over there.
<-------------------------------
hikaricloud is offline  
Old 03-03-2009, 12:36 PM   #9 (permalink)
Newb Techie
 
Join Date: Mar 2009
Posts: 8
Default Re: New Power Supply and PC won't Boot

all right thanks i suppose ill go get it tested though all the lights on the motherboard seem ok
CoH Addict is offline  
Old 03-03-2009, 12:39 PM   #10 (permalink)
Lord Techie
 
hikaricloud's Avatar
 
Join Date: Jul 2005
Location: USA
Posts: 6,220
Default Re: New Power Supply and PC won't Boot

Try your old PSU, and take the RAM out of the machine. If it beeps, there may be hope yet.
__________________

__________________
R.I.P. Ronald C. "Bucky" Buck
3/13/1949 - 11/30/2010
Poizen22 - in all honesty id prefetr my pics get passed around then send perform some homo erotic sexual deed.
thirdshiftdj - what on earth are you trying to say???
I do not accept support questions via EMail, PM or IM.
If I helped you out, or what I just said rocked you like a hurricane, hit the little thingie over there.
<-------------------------------
hikaricloud is offline  
Closed Thread

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 11:45 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.