PC will not start (no power)

**PrOLifIC_onE** · February 4th, 2007

Ok, I am going to list all the possible reasons that I can think of. This can be for any build. This would be for no power whatsoever... No working fans or anything.

I want everyone to check the list and add anything I may have missed.

1) Not plugged in.
2) PSU Switch turned off.
3) Faulty/Non-working PSU.
4) Motherboard power connectors not seated properly (20/24 pin or 4/8 pin).
5) Faulty/Non-working Case (power) Switch
6) CPU not seated properly.
7) Front Panel Switch connectors on incorrect pins.
8) Faulty/Non-working Motherboard.
9) Bent cpu or MB pins
10) Battery Dead
11) Motherboard bend (wrong size standoffs or overtightened HSF)
12) Grounded Motherboard (make sure all standoffs are in correct locations and no other metal touching mobo)

pc_guy · February 4th, 2007

The actual wall receptacle and/or circuit breaker and/or power bar might also be a good thing to check.

**gvblake22** · February 4th, 2007

I don't think an improperly seated processor would prevent all the fans from spinning up. You would probably destroy the processor and/or motherboard, but I think (at least the first try) the fans would at least spin up.

Lead Head · February 4th, 2007

Quote:

Originally Posted by gvblake22

I don't think an improperly seated processor would prevent all the fans from spinning up. You would probably destroy the processor and/or motherboard, but I think (at least the first try) the fans would at least spin up.

On my old Athlon 64 rig, the CPU was lifted out of the socket a bit on one side, the fans powered up, but just no POST.

Tyreal · February 4th, 2007

Quote:

Originally Posted by Lead Head

On my old Athlon 64 rig, the CPU was lifted out of the socket a bit on one side, the fans powered up, but just no POST.

Same here. The pins were a little bent so the processor wouldn't go in all the way. The fans spun up but there was no display.

**Capper** · February 4th, 2007

the motherboard could be grounded as well, but other than that you covered everything I'd think to check

sbohdan · February 4th, 2007

did you check the wall socket? maybe no power at the source...

polobunny · February 4th, 2007

Problematic/not seated properly device (RAM, PCI card, AGP card)
Seen often, really.

**Capper** · February 5th, 2007

Quote:

Originally Posted by polobunny

Problematic/not seated properly device (RAM, PCI card, AGP card)
Seen often, really.

Fans would still spin up

polobunny · February 5th, 2007

Quote:

Originally Posted by Capper

Fans would still spin up

I could prove you wrong. =)
I've seen more than a few boards not start, fan(s) not starting, no beeps, light on board lit when a component wasn't inserted properly.
Most often though they start, no display and beep.

February 4th, 2007	#1
PrOLifIC_onE 5 Minute Mod Man Join Date: Dec 2006 Location: Michigan Posts: 645 Blog Entries: 1	PC will not start (no power) Ok, I am going to list all the possible reasons that I can think of. This can be for any build. This would be for no power whatsoever... No working fans or anything. I want everyone to check the list and add anything I may have missed. 1) Not plugged in. 2) PSU Switch turned off. 3) Faulty/Non-working PSU. 4) Motherboard power connectors not seated properly (20/24 pin or 4/8 pin). 5) Faulty/Non-working Case (power) Switch 6) CPU not seated properly. 7) Front Panel Switch connectors on incorrect pins. 8) Faulty/Non-working Motherboard. 9) Bent cpu or MB pins 10) Battery Dead 11) Motherboard bend (wrong size standoffs or overtightened HSF) 12) Grounded Motherboard (make sure all standoffs are in correct locations and no other metal touching mobo) Last edited by PrOLifIC_onE; December 5th, 2007 at 15:55. Reason: clarification

February 4th, 2007	#2
pc_guy Join Date: Nov 2006 Location: Inside an igloo, Canada Posts: 313	Re: PC will not start (no power) The actual wall receptacle and/or circuit breaker and/or power bar might also be a good thing to check. \|\| AMD Athlon64 3800+ Venice \| Asus A8N5X s939 \| OCZ Premier PC3200 Du-Ch 1GB \| Sapphire X1600Pro 512MB PCI-e \| 1xWD 80Gb & 1xWD 250Gb Sata(s) \| Antec SLK3800B Case \| Enermax NoiseTaker 485W \|\|

February 4th, 2007	#3
gvblake22 Modder-ator Join Date: Dec 2005 Location: Tempe Desert Posts: 6,351 Blog Entries: 1	Re: PC will not start (no power) I don't think an improperly seated processor would prevent all the fans from spinning up. You would probably destroy the processor and/or motherboard, but I think (at least the first try) the fans would at least spin up.

February 4th, 2007	#6
Capper I'm Evil Join Date: Dec 2005 Location: Las Vegas, NV Posts: 5,615 Blog Entries: 6	Re: PC will not start (no power) the motherboard could be grounded as well, but other than that you covered everything I'd think to check INTEL QX9650 ASUS P5E3 Premium 4GB DDR3-1600 Sapphire HD 3870X2 Danger Den Tower-26 (Custom W/C) 5 x Seagate 250GB HDD in RAID5 BFG ES 800W PSU

February 4th, 2007	#7
sbohdan VGA tuner & F@H Moderator Join Date: Jan 2006 Location: Ottawa, Canada Posts: 599	Re: PC will not start (no power) did you check the wall socket? maybe no power at the source... Main rig: Chieftec modded case,MSI P4N Diamond, D830@3.48Ghz,1.4V,928FSB 2GB patriot Extreme Performance 6400@900Mhz, 4-4-4-17 Inno3D 7900GT@542Mhz/1.6Ghz, Thermalright SI-97 Samsung 320GB, Maxtor 250GB; Antec 500W Swiftech NB, Asus StarIceBlue CPU cooler; XP Pro Laptop: Dell XPS 1530 (T7500; 3GB 667 RAM; 160GB 7200rpm HDD; 8600GT; Vista 32bit) my 6800LE mod

February 4th, 2007	#8
polobunny T-Rex Join Date: May 2006 Posts: 4,575 Blog Entries: 6	Re: PC will not start (no power) Problematic/not seated properly device (RAM, PCI card, AGP card) Seen often, really.

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