Immediate Help Please - Computer not Booting after Changing Power Suppy Unit (PSU)

Sydman · 17-03-2008, 01:34 PM

Hello,
I think I had a broken 300W PSU (power supply unit), which I replaced with 450W today. The first time, it opened my windows as normal, when I came back to check if everything was ok, I found my computer frozen in POST, I tried rebooting, but nothing comes up on screen. I disconnected all hardware including RAM to eliminate any possible hardware conflict, connecting them one by one, still nothing. I took off the video card and tried using the onboard video, still nothing.
I would appreciate any suggestions, whatsoever, I desparately need to revive my PC.

Thanks in advance.

Sydman

Sydman · 17-03-2008, 02:03 PM

I just wanted to add: The PC doesn't beep at all. I didn't add no new hardware/software. I can see nothing at all when rebooting.

**Chef** · 17-03-2008, 02:25 PM

Well, it seems that the PSU has burnt out your whole computer???

Sydman · 17-03-2008, 02:41 PM

how is that possible? Ok, let's say it is possible that has caused some trouble, what is the next step? I thought the mobo might have an issue. I am not clear at all.

Sydman

**Chef** · 17-03-2008, 02:58 PM

Can you please give me full details as to what happened???
And what brand is the new 450W PSU, is it a budget one or a good one???
And also open up your pc case and smell if there is anything burnt or anything that has melted??? Do the same at the back of the PSU, smell if there is anything burnt out of it??? Do these things and then reply!

**bakuryu** · 17-03-2008, 04:18 PM

a simple way to test whether it's the PSU, is by using another temporary PSU. Also it might be a psu internal hardware failure or cannot supply enough power due to some failures, and your mobo and all are still ok.

Hatrix · 17-03-2008, 07:45 PM

no it'd surely wht matthew said i had this problem when replacing a psu , it even burned my rams....but it is still working well till yesterday i found a black spot under the CPU fan... i given it to maintainance but they said...lets put him in test for 72 hours :S :S it got burned and they are putting the fault on me they coulded replace something or try something else ......damn...

Albin · 17-03-2008, 08:01 PM

Simple way to check ur PSU or SMPS is,
just see if ur CD/DVD drive opens & closes when u eject it.. Even if the motherboard breaks, the CD drive should open & close.
If the CD drive doesnt Open then there is a chance for ur mobo to be safe. and ur PSU or SMPS might got off, so change it.

Regards
Albin

Sydman · 18-03-2008, 10:18 AM

Hello,
I smelled the inside of computer, none of the parts smells like burnt. I also check the DVD burner, it ejects and closes as normal. It is a budget PSU, but since it is brand new, I expected it to work. I could be PSU, I couldn't check another PSU as i don't have a spare one at the stage. If it is the PSU, I can get a replacement since it has 12 mnths wrnty on it and I bought it yesterday, but if it is mobo, I have be certain before I buy a new one.
Thanks for all the suggestions, any other suggestion would be appreciated.

Regards,

Sydman

**Chef** · 18-03-2008, 12:48 PM

So does the CPU HSF (Heat Sink Fan) spin up when you power up the computer???????

17-03-2008, 01:34 PM	#1
Sydman Newbie Join Date: Mar 2008 Age: 33 Posts: 17 Thanks: 0 Thanked 0 Times in 0 Posts Rep Power: 0	Immediate Help Please - Computer not Booting after Changing Power Suppy Unit (PSU) Hello, I think I had a broken 300W PSU (power supply unit), which I replaced with 450W today. The first time, it opened my windows as normal, when I came back to check if everything was ok, I found my computer frozen in POST, I tried rebooting, but nothing comes up on screen. I disconnected all hardware including RAM to eliminate any possible hardware conflict, connecting them one by one, still nothing. I took off the video card and tried using the onboard video, still nothing. I would appreciate any suggestions, whatsoever, I desparately need to revive my PC. Thanks in advance. Sydman

17-03-2008, 02:03 PM	#2
Sydman Newbie Join Date: Mar 2008 Age: 33 Posts: 17 Thanks: 0 Thanked 0 Times in 0 Posts Rep Power: 0	Re: Immediate Help Please, Read! I just wanted to add: The PC doesn't beep at all. I didn't add no new hardware/software. I can see nothing at all when rebooting.

17-03-2008, 02:25 PM	#3
Chef Hardware Support Join Date: Nov 2007 Location: C:/Program Files/Games/ Age: 17 Posts: 1,036 Thanks: 70 Thanked 57 Times in 54 Posts Rep Power: 14 OS:	Re: Immediate Help Please, Read! Well, it seems that the PSU has burnt out your whole computer???

17-03-2008, 02:41 PM	#4
Sydman Newbie Join Date: Mar 2008 Age: 33 Posts: 17 Thanks: 0 Thanked 0 Times in 0 Posts Rep Power: 0	Re: Immediate Help Please, Read! how is that possible? Ok, let's say it is possible that has caused some trouble, what is the next step? I thought the mobo might have an issue. I am not clear at all. Sydman

17-03-2008, 02:58 PM	#5
Chef Hardware Support Join Date: Nov 2007 Location: C:/Program Files/Games/ Age: 17 Posts: 1,036 Thanks: 70 Thanked 57 Times in 54 Posts Rep Power: 14 OS:	Re: Immediate Help Please, Read! Can you please give me full details as to what happened??? And what brand is the new 450W PSU, is it a budget one or a good one??? And also open up your pc case and smell if there is anything burnt or anything that has melted??? Do the same at the back of the PSU, smell if there is anything burnt out of it??? Do these things and then reply!

17-03-2008, 04:18 PM	#6
bakuryu ƒ(ψ)=Θº×φ Join Date: May 2006 Location: India Age: 24 Posts: 6,621 Thanks: 19 Thanked 649 Times in 605 Posts Rep Power: 87 OS:	Re: Immediate Help Please, Read! a simple way to test whether it's the PSU, is by using another temporary PSU. Also it might be a psu internal hardware failure or cannot supply enough power due to some failures, and your mobo and all are still ok. __________________ Please don't click here

17-03-2008, 07:45 PM	#7
Hatrix Senior Member (500+) Join Date: Jan 2007 Location: Tunisia Posts: 936 Thanks: 50 Thanked 57 Times in 53 Posts Rep Power: 22 OS:	Re: Immediate Help Please, Read! no it'd surely wht matthew said i had this problem when replacing a psu , it even burned my rams....but it is still working well till yesterday i found a black spot under the CPU fan... i given it to maintainance but they said...lets put him in test for 72 hours :S :S it got burned and they are putting the fault on me they coulded replace something or try something else ......damn... __________________ Mawarebytes Ccleaner KillBox

17-03-2008, 08:01 PM	#8
Albin Regular Member (100+) Join Date: Jan 2008 Posts: 246 Thanks: 1 Thanked 25 Times in 24 Posts Rep Power: 4 OS:	Re: Immediate Help Please, Read! Simple way to check ur PSU or SMPS is, just see if ur CD/DVD drive opens & closes when u eject it.. Even if the motherboard breaks, the CD drive should open & close. If the CD drive doesnt Open then there is a chance for ur mobo to be safe. and ur PSU or SMPS might got off, so change it. Regards Albin __________________ _______________ Cheers, Albin "We are all either fools or undiscovered geniuses."

18-03-2008, 10:18 AM	#9
Sydman Newbie Join Date: Mar 2008 Age: 33 Posts: 17 Thanks: 0 Thanked 0 Times in 0 Posts Rep Power: 0	Re: Immediate Help Please - Computer not Booting after Changing Power Suppy Unit (PSU) Hello, I smelled the inside of computer, none of the parts smells like burnt. I also check the DVD burner, it ejects and closes as normal. It is a budget PSU, but since it is brand new, I expected it to work. I could be PSU, I couldn't check another PSU as i don't have a spare one at the stage. If it is the PSU, I can get a replacement since it has 12 mnths wrnty on it and I bought it yesterday, but if it is mobo, I have be certain before I buy a new one. Thanks for all the suggestions, any other suggestion would be appreciated. Regards, Sydman

18-03-2008, 12:48 PM	#10
Chef Hardware Support Join Date: Nov 2007 Location: C:/Program Files/Games/ Age: 17 Posts: 1,036 Thanks: 70 Thanked 57 Times in 54 Posts Rep Power: 14 OS:	Re: Immediate Help Please - Computer not Booting after Changing Power Suppy Unit (PSU) So does the CPU HSF (Heat Sink Fan) spin up when you power up the computer???????

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Immediate Help Please - Computer not Booting after Changing Power Suppy Unit (PSU)

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