Please help, new psu won't power up

mydartswinger · 01-03-2006, 12:16 AM

I just finished assembling my first homebuilt pc, and it won't power up. I've checked the jumpers to the cases power button and reset button. I've also added a 20-pin psu to 24-pin mobo adapter. I've checked, double checked, and checked again in the mobo manual to check the jumpers. The case did not come with a manual. After turning the power on on the psu, when I go to turn it off, it makes a surging sound. Please help. Any advice would be greatly appreciated. Specifics are listed below. Thanks in advance.

A-Top Technologies Xblade Case w/ 450w PSU
Gigabyte K8N51-9 Mobo
AMD Athlon 64 3000+ CPU
Liteon CD-R
Western Digital IDE 120Gb Hard Drive
512Mb RAM

diduknowthat · 01-03-2006, 12:38 AM

what do you mean by a surging sound? Is your motherboard standby light, if it has one, on? Do you get any beep codes from your mobo? And what are the exact specs of the psu? And what's your graphics card?

**The_Other_One** · 01-03-2006, 12:44 AM

You did install stand-off's under the motherboard, didn't you? Because it sounds like you're shorting out somewhere. If this is the case then you just fried your setup. HOPFULLY it's just a bad power supply...

mydartswinger · 01-03-2006, 06:15 AM

First off, thanks for all the replies.

Liuliu- by a surging sound I mean the almost silent sound that you hear when you power off a computer or a tv, other than that I really don't know how to describe it. My mobo does not have a standby light, and is not emitting any sound whatsoever. PSU is a L&C Model LC-B450E 450W unit that came with the case. The graphics card is an onboard geForce 6100.

Other_One- This may sound stupid(my IT experience mostly lies in software and networking), but since this is my first build I'll shoot anyway. If by stand offs, you mean the red gasket-like washers provided in the case's hardware kit, I installed those between the head of the screws and the mobo.

Firefox · 01-03-2006, 07:52 AM

stand offs are small plastic washers the go between your mobo and the case...
please tell me that you have those on ur new setup.....or you may have just built a nice,shiney new box of junk....

**ceewi1** · 01-03-2006, 09:28 AM

I really hope you haven't fried the mobo, but if you haven't put the stand offs between the case and mobo it's a very high probability. The only other thing I can think of is the 4 pin +12V ATX connection - make sure you plugged it in. The power supply should be sufficient to power your system, assuming you didn't just get a bad PSU.

mydartswinger · 01-03-2006, 04:37 PM

PROBLEM SOLVED

Thanks for all the replies. I brought my PC into work this morning and one of my co-workers showed me which pieces were the standoffs. I installed those and she powered right up and began going through the post. I realize now that I'm VERY lucky that I didn't fry anything, and I will never make that mistake again.

fade2green514 · 01-03-2006, 04:52 PM

ok, i think ive had a similar problem before.
when you screwed in the motherboard did you put the insulators under the screws? that might cause a problem. oh lol just checked, this is a post edit... lol good thing you got the problem solved!

**The_Other_One** · 01-03-2006, 05:22 PM

No stand-off's? Hah, who know's what he's talking about :3 Hehe, glad to hear it's not fried. I think new system's can take a bit more abuse than older ones.

mydartswinger · 01-03-2006, 05:31 PM

Like I said in a previous post, this was my first build and I didn't have guidance at first. That was my mistake for not asking an experienced builder for assistance before I started building. Everything else is apparently working fine, so it looks like that was my only mistake, and lucky that it didn't cost me my system.

01-03-2006, 12:16 AM	#1 (permalink)
mydartswinger New Member Join Date: Jan 2006 Location: Fairbanks, AK Posts: 4	Please help, new psu won't power up I just finished assembling my first homebuilt pc, and it won't power up. I've checked the jumpers to the cases power button and reset button. I've also added a 20-pin psu to 24-pin mobo adapter. I've checked, double checked, and checked again in the mobo manual to check the jumpers. The case did not come with a manual. After turning the power on on the psu, when I go to turn it off, it makes a surging sound. Please help. Any advice would be greatly appreciated. Specifics are listed below. Thanks in advance. A-Top Technologies Xblade Case w/ 450w PSU Gigabyte K8N51-9 Mobo AMD Athlon 64 3000+ CPU Liteon CD-R Western Digital IDE 120Gb Hard Drive 512Mb RAM

01-03-2006, 12:38 AM	#2 (permalink)
diduknowthat formerly liuliuboy Join Date: Jun 2005 Location: Massachusetts Age: 17 Posts: 6,461	what do you mean by a surging sound? Is your motherboard standby light, if it has one, on? Do you get any beep codes from your mobo? And what are the exact specs of the psu? And what's your graphics card? __________________ Dell Latitude XT Convertible Tablet Intel Core 2 Duo U7600 1.2ghz CPU 3GB DDR2 677 Memory 120GB 1.8" PATA Hard Drive ATI Radeon Xpress 1250 Graphics 12.1" WXGA LED Touch Screen N-Trig Capacitive Touch/Active Digitizer

01-03-2006, 12:44 AM	#3 (permalink)
The_Other_One Super Moderator Join Date: Mar 2005 Location: Lexington, NC Age: 23 Posts: 12,368	You did install stand-off's under the motherboard, didn't you? Because it sounds like you're shorting out somewhere. If this is the case then you just fried your setup. HOPFULLY it's just a bad power supply... __________________ Desktop * Athlon X2 4200 \| 2G RAM \| 160G HD \| 7600GT Laptop1 * C2D T5550 \| 3G RAM \| 120G HD \| Intel x3100 Laptop2 * C2D T5250 \| 2G RAM \| 160G HD \| Intel x3100

01-03-2006, 07:52 AM	#5 (permalink)
Firefox Bronze Member Join Date: Nov 2005 Location: Plant Earth (mostly) Age: 25 Posts: 52	stand offs are small plastic washers the go between your mobo and the case... please tell me that you have those on ur new setup.....or you may have just built a nice,shiney new box of junk.... __________________ *The Machine...* CPU: AMD Athlon XP 2400+ :( Mobo: Elite K7S5A Pro PSU: Tagan TG480-U22 480W HDD: Barracuda 120GB RAM: 512MB Gfx: nVidia GeForceFX5200 :( Sound: Standard Onboard :( Oh and other boring stuff like DVD/RW, CD R/W, Firewire etc...:P

01-03-2006, 09:28 AM	#6 (permalink)
ceewi1 Moderator Join Date: Dec 2005 Location: Melbourne, Australia Age: 21 Posts: 5,267	I really hope you haven't fried the mobo, but if you haven't put the stand offs between the case and mobo it's a very high probability. The only other thing I can think of is the 4 pin +12V ATX connection - make sure you plugged it in. The power supply should be sufficient to power your system, assuming you didn't just get a bad PSU. __________________ CPU: Core 2 Duo E6600 / MOBO: Gigabyte 965P-DS3 / GPU: Gigabyte HD4870 RAM: 2GB G.Skill F2-6400CL4D-2GBPK / HDD: 2TB Total HDD / PSU: Antec NeoPower 480W Cheap PSUs - 2% of system costs, responsible for 28% of system deaths As Sealed Stick was removed, lost or damaged, it shall be out of warranty validity. - The "Warranty void if removed" sticker on numerous CoolerMaster PSUs. Useful PSU Guides

01-03-2006, 06:15 AM	#4 (permalink)
mydartswinger New Member Join Date: Jan 2006 Location: Fairbanks, AK Posts: 4	First off, thanks for all the replies. Liuliu- by a surging sound I mean the almost silent sound that you hear when you power off a computer or a tv, other than that I really don't know how to describe it. My mobo does not have a standby light, and is not emitting any sound whatsoever. PSU is a L&C Model LC-B450E 450W unit that came with the case. The graphics card is an onboard geForce 6100. Other_One- This may sound stupid(my IT experience mostly lies in software and networking), but since this is my first build I'll shoot anyway. If by stand offs, you mean the red gasket-like washers provided in the case's hardware kit, I installed those between the head of the screws and the mobo.

01-03-2006, 04:37 PM	#7 (permalink)
mydartswinger New Member Join Date: Jan 2006 Location: Fairbanks, AK Posts: 4	Problem Solved PROBLEM SOLVED Thanks for all the replies. I brought my PC into work this morning and one of my co-workers showed me which pieces were the standoffs. I installed those and she powered right up and began going through the post. I realize now that I'm VERY lucky that I didn't fry anything, and I will never make that mistake again.

01-03-2006, 04:52 PM	#8 (permalink)
fade2green514 Diamond Member Join Date: Nov 2005 Location: buffalo ny Age: 19 Posts: 3,616	ok, i think ive had a similar problem before. when you screwed in the motherboard did you put the insulators under the screws? that might cause a problem. oh lol just checked, this is a post edit... lol good thing you got the problem solved! __________________ Core 2 Quad Q6600 @ 3ghz HD 4850 512mb (750/2350mhz) 2x2gb G.Skill ddr2-835 (5-4-4-10) 2x80gb sata2 in RAID 0 system drive 250gb sata2 storage drive 13,574 - 3dmark06 score

01-03-2006, 05:22 PM	#9 (permalink)
The_Other_One Super Moderator Join Date: Mar 2005 Location: Lexington, NC Age: 23 Posts: 12,368	No stand-off's? Hah, who know's what he's talking about :3 Hehe, glad to hear it's not fried. I think new system's can take a bit more abuse than older ones. __________________ Desktop * Athlon X2 4200 \| 2G RAM \| 160G HD \| 7600GT Laptop1 * C2D T5550 \| 3G RAM \| 120G HD \| Intel x3100 Laptop2 * C2D T5250 \| 2G RAM \| 160G HD \| Intel x3100

01-03-2006, 05:31 PM	#10 (permalink)
mydartswinger New Member Join Date: Jan 2006 Location: Fairbanks, AK Posts: 4	Like I said in a previous post, this was my first build and I didn't have guidance at first. That was my mistake for not asking an experienced builder for assistance before I started building. Everything else is apparently working fine, so it looks like that was my only mistake, and lucky that it didn't cost me my system. __________________ A-top Technologies Xblade Case W/450W PSU Gigabyte K8N51-9 Mobo AMD Athlon 64 3000+ CPU 512Mb PC3200 RAM Western Digital 120Gb IDE Hard Drive Liteon CD-RW

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