PC Not Booting Up

DaveK · Nov 17, 2009, 06:07 PM

Ok i need help on this one, my PC was fine Monday at 7am as I was using it, went to boot it up at like 8pm and nothing is happening at all, the power light on my mobo is on but nothing happens when i go to turn it on, i tried booting with 1 stick of RAM but didn't try other sticks as it's under my CPU cooler...

So anyone got tips on what to do? It could be anything and I don't know where to start :S

Nailezs · Nov 17, 2009, 06:34 PM

do your fans turn on?

Corduroy_Jr · Nov 17, 2009, 06:39 PM

any beeps, does it post up, to bios screen

DaveK · Nov 17, 2009, 07:29 PM

No, fans don't turn on and doesn't get to post screen, like i said, nothing happens, nothing at all.

Munki · Nov 17, 2009, 07:32 PM

We have a computer in one of our schools that had that issue. It was the power supply and it took out the motherboard with it. It would come on sometimes (lights) but nothing more.

Do you have a power supply tester?

suraswami · Nov 17, 2009, 07:33 PM

Dang, my brother's PC also has the same problem, sometimes it turns on sometimes it doesn't, if it turns on it will be good in Windows for a while then suddenly it will shutdown and won't turn back on.

Did you clear the cmos and reset everything?

Nailezs · Nov 17, 2009, 07:41 PM

if his fans arent even turning on then it is the power supply
DaveK, start by replacing your power supply and go from there. it might have taken your board with it, it might not have.

you can try shorting the green and yellow(i think its the green and yellow, can someone confirm or correct this?) wires on the 20/24pin connecter and see if the power supply turns on. if it does than its the mb, if not then its the psu

cerver · Nov 17, 2009, 07:41 PM

try swapping the PSU if you have an extra. if not, then try getting a psu tester, they are cheap. Also try a different socket in the wall and possibly a different cord from the PSU to the wall.

IMO i would guess its the PSU. no power brings no post no nothing, so thats what it sounds like to me.

Munki · Nov 17, 2009, 07:46 PM

Quote:

Originally Posted by Nailezs

you can try shorting the green and yellow(i think its the green and yellow, can someone confirm or correct this?) wires on the 20/24pin connecter and see if the power supply turns on. if it does than its the mb, if not then its the psu

Green and Black....

Nailezs · Nov 17, 2009, 07:51 PM

i swear that that was gonna be my second guess haha

Munki · Nov 17, 2009, 07:58 PM

Quote:

Originally Posted by Nailezs

i swear that that was gonna be my second guess haha

You didn't have a ground. You need a complete circuit.

zithe · Nov 17, 2009, 07:59 PM

Try another keyboard and mouse. I thought my parent's PC was dead and it baffled me for two months, then I took their tower into my room, used my own peripherals and all was well.

Luckily we had a few keyboards lying around and a walmart nearby for a cheap mouse.

Nailezs · Nov 17, 2009, 08:00 PM

i couldnt remember if yellow was the ground or black...then i thought of the 4 pin molex connections, with 1 yellow 1 red and 2 black, and iw as like "black must be ground" but i've seen yellow be gorund in other industrys so that just stuck with me haha

Munki · Nov 17, 2009, 08:01 PM

Quote:

Originally Posted by Nailezs

i couldnt remember if yellow was the ground or black...then i thought of the 4 pin molex connections, with 1 yellow 1 red and 2 black, and iw as like "black must be ground" but i've seen yellow be gorund in other industrys so that just stuck with me haha

Pretty Sure its a +5 volt in this industry.

Munki · Nov 17, 2009, 08:02 PM

Quote:

Originally Posted by zithe

Try another keyboard and mouse. I thought my parent's PC was dead and it baffled me for two months, then I took their tower into my room, used my own peripherals and all was well.

Luckily we had a few keyboards lying around and a walmart nearby for a cheap mouse.

Uh, no. If a keyboard or mouse is missing, you would receive a beep code. Im willing to bet its that power supply, motherboard, or both.

Nailezs · Nov 17, 2009, 08:06 PM

Quote:

Originally Posted by Munki

Pretty Sure its a +5 volt in this industry.

i know...again, back to thinking of the 4 pin connectors

Munki · Nov 17, 2009, 08:07 PM

Quote:

Originally Posted by Nailezs

i know...again, back to thinking of the 4 pin connectors

Im not 100% positive that is why i said "think" it did kinda sound like I was being a smartazz. Sorry.

Nailezs · Nov 17, 2009, 08:14 PM

np

zithe · Nov 17, 2009, 08:15 PM

Quote:

Originally Posted by Munki

Uh, no. If a keyboard or mouse is missing, you would receive a beep code. Im willing to bet its that power supply, motherboard, or both.

No, if it has a short in it. Electrical short.

Munki · Nov 17, 2009, 08:21 PM

Quote:

Originally Posted by zithe

No, if it has a short in it. Electrical short.

Wouldn't stop the PC from booting......your mouse and keyboard just wouldn't work.

zithe · Nov 17, 2009, 08:26 PM

Quote:

Originally Posted by Munki

Wouldn't stop the PC from booting......your mouse and keyboard just wouldn't work.

Not really. If you have to move it for the short to happen, (as it was in my case) it would freeze/shut the computer down. I replaced it and it stopped. I mean it WOULDN'T start until i replaced the mouse.

Munki · Nov 18, 2009, 01:13 AM

Quote:

Originally Posted by zithe

Not really. If you have to move it for the short to happen, (as it was in my case) it would freeze/shut the computer down. I replaced it and it stopped. I mean it WOULDN'T start until i replaced the mouse.

Seems irrelevant to me. I don't know everything, so im not saying your wrong.

i789 · Nov 18, 2009, 01:18 AM

It seems that the PSU is down, try another one and see if the computer will boot up.

p_o_s_pc · Nov 18, 2009, 01:27 AM

Quote:

Originally Posted by Munki

Pretty Sure its a +5 volt in this industry.

incorrect the yellow is +12v red is +5v

Velvet Wafer · Nov 18, 2009, 01:44 AM

you were faster,pos

Nov 17, 2009, 06:07 PM	#1
DaveK Join Date: Oct 2008 Location: Dublin, Ireland Posts: 1,268 (0.74/day) Thanks: 113 Thanked 137 Times in 119 Posts System Specs	PC Not Booting Up Ok i need help on this one, my PC was fine Monday at 7am as I was using it, went to boot it up at like 8pm and nothing is happening at all, the power light on my mobo is on but nothing happens when i go to turn it on, i tried booting with 1 stick of RAM but didn't try other sticks as it's under my CPU cooler... So anyone got tips on what to do? It could be anything and I don't know where to start :S

System Name:	Project One (Rev.B)
Processor:	Intel Core i3-2100 @ 3.1GHz
Motherboard:	Asus P8P67 LE
Cooling:	Stock
Memory:	4GB Corsair Vengeance DDR3 @ 1600MHz
Video Card:	1GB Sapphire Radeon HD4650 Ultimate Edition
Hard Disk:	1TB Samsung SpinPoint F1, 500GB Seagate, 250GB Hitatchi
CRT/LCD Model:	22" Samsung T220HD & 19" Acer X193W
Case:	Antec Nine Hundred
Sound Card:	Creative Sound Blaster X-Fi Platinum
PSU:	Corsair HX650W
Software:	Windows 7 Ultimate x64

Nov 17, 2009, 06:34 PM	#2
Nailezs Join Date: Jul 2009 Location: DelMarVa Posts: 841 (0.59/day) Thanks: 156 Thanked 70 Times in 66 Posts System Specs	do your fans turn on? __________________ Disclaimer: 99% of the time I think I am right. If I am wrong, correct me. "I only ever made a mistake once in my life - but it was a mistake" - My Dad “i beat it on pc while chatting in steam and on vent. granted, it took me a few tries but it is do-able.” -Nailezs “Well I must not be as 1337 as you. I'm going to build a life size vinyl statue of this bitch and commence to face f#$k her it I can't beat her in game.” -TheMailMan78 I AM 1337!!

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Video Card:	XFX GTX 285 (stock)
Hard Disk:	WD 250GB x3 in RAID 0, WD CB 2TB, 1TB External
Optical Drive:	Lite-On 20x LH-20A1L
CRT/LCD Model:	Acer AL2216Wbd Black 22" 5ms
Case:	Antec 1200
Sound Card:	Soundblaster X-Fi Xtreme Audio
PSU:	Thermaltake Toughpower 850w
Software:	Windows Vista Home Premium 64bit

Processor:	Phenom II 965
Motherboard:	Biostar TA870+
Cooling:	Zalman CNPS10X Performa
Memory:	Kingston hyperx 1600mhz 2x8gb
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PSU:	Antec true power modular 650 watt
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Nov 17, 2009, 06:39 PM	#3
Corduroy_Jr Join Date: Oct 2009 Location: barrie ont Posts: 758 (0.57/day) Thanks: 8 Thanked 62 Times in 49 Posts System Specs	any beeps, does it post up, to bios screen

Nov 17, 2009, 07:29 PM	#4
DaveK Join Date: Oct 2008 Location: Dublin, Ireland Posts: 1,268 (0.74/day) Thanks: 113 Thanked 137 Times in 119 Posts System Specs	No, fans don't turn on and doesn't get to post screen, like i said, nothing happens, nothing at all.

Nov 17, 2009, 07:32 PM	#5
Munki Join Date: Sep 2008 Location: Weedopia Posts: 1,169 (0.67/day) Thanks: 114 Thanked 187 Times in 143 Posts System Specs	We have a computer in one of our schools that had that issue. It was the power supply and it took out the motherboard with it. It would come on sometimes (lights) but nothing more. Do you have a power supply tester? __________________

Processor:	Intel i5 2550K @ 4.4Ghz
Motherboard:	Asrock Extreme3 Gen3
Cooling:	CM Hyper 212+
Memory:	16Gb (4x4) XMS3 1600mhz
Video Card:	EVGA GTX470
Hard Disk:	OCZ Vertex 3 - 240GB
CRT/LCD Model:	(2) Acer 24" LCD
Case:	Bitfenix Raider
PSU:	SILVERSTONE Strider Gold Evolution SST-ST1000-G Evolution 1000W
Software:	Windows 7 Pro x64 \| Backtrack 5 R2

Nov 17, 2009, 07:33 PM	#6
suraswami Eligible for custom title Join Date: Apr 2005 Location: Irvine, CA Posts: 5,175 (1.73/day) Thanks: 866 Thanked 608 Times in 538 Posts System Specs	Dang, my brother's PC also has the same problem, sometimes it turns on sometimes it doesn't, if it turns on it will be good in Windows for a while then suddenly it will shutdown and won't turn back on. Did you clear the cmos and reset everything? __________________ 2 Servers Multiple VMs including WHS on VM, capacity 3.5 TB HDD Family Machine - W7 Ultimate 64bit, ECS 780G, Phenom II X3 720BE @ 3.1Ghz- 1.38V, 4GB DDR2 800 ram, Sapphire 4670 512MB, 600W Ultra X pro, Xigmatek HDT-S1283 "Oh please, the only thing more resilient than an Indian is a cockroach. Not even nukes can stop their immune systems" - TheMailMan78

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CRT/LCD Model:	AOC 23" 1080P LCD
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Sound Card:	Built-in RealTek
PSU:	ULTRA X3 600W Modular
Software:	Windows 7 Ultimate 64 bit
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Nov 17, 2009, 07:41 PM	#7
Nailezs Join Date: Jul 2009 Location: DelMarVa Posts: 841 (0.59/day) Thanks: 156 Thanked 70 Times in 66 Posts System Specs	if his fans arent even turning on then it is the power supply DaveK, start by replacing your power supply and go from there. it might have taken your board with it, it might not have. you can try shorting the green and yellow(i think its the green and yellow, can someone confirm or correct this?) wires on the 20/24pin connecter and see if the power supply turns on. if it does than its the mb, if not then its the psu __________________ Disclaimer: 99% of the time I think I am right. If I am wrong, correct me. "I only ever made a mistake once in my life - but it was a mistake" - My Dad “i beat it on pc while chatting in steam and on vent. granted, it took me a few tries but it is do-able.” -Nailezs “Well I must not be as 1337 as you. I'm going to build a life size vinyl statue of this bitch and commence to face f#$k her it I can't beat her in game.” -TheMailMan78 I AM 1337!!

Nov 17, 2009, 07:41 PM	#8
cerver Join Date: Nov 2009 Location: Philly Posts: 43 (0.03/day) Thanks: 3 Thanked 7 Times in 7 Posts	try swapping the PSU if you have an extra. if not, then try getting a psu tester, they are cheap. Also try a different socket in the wall and possibly a different cord from the PSU to the wall. IMO i would guess its the PSU. no power brings no post no nothing, so thats what it sounds like to me. __________________ My babyhttp://www.techpowerup.com/gallery/2382.html

System Name:	Main PC
Processor:	Intel Core 2 Quad Processor Q9450
Motherboard:	ASUS RAMPAGE FORMULA LGA 775 Intel X48
Cooling:	ZALMAN CNPS9300 AT
Memory:	Crucial 8GB (4 x 2GB) 240-Pin DDR2 667-CT2KIT51264AA667
Video Card:	2x ASUS EN9600GT/GeForce 9600GT
Hard Disk:	2x Western Digital Caviar Green WD15EADS 1.5TB SATA 3.0Gb/s 3.5
Optical Drive:	Pioneer Black Blu-ray SATA Model BDR-205BKS
CRT/LCD Model:	61" Samsung 1080p DLP TV
Case:	Black Dell Vostro
Sound Card:	On Board
PSU:	Thermaltake Toughpower XT W0227RU 650W ATX 12V 2.3 80 PLUS BRONZE
Software:	Windows Vista Ultimate 64

Nov 17, 2009, 07:51 PM	#10
Nailezs Join Date: Jul 2009 Location: DelMarVa Posts: 841 (0.59/day) Thanks: 156 Thanked 70 Times in 66 Posts System Specs	i swear that that was gonna be my second guess haha __________________ Disclaimer: 99% of the time I think I am right. If I am wrong, correct me. "I only ever made a mistake once in my life - but it was a mistake" - My Dad “i beat it on pc while chatting in steam and on vent. granted, it took me a few tries but it is do-able.” -Nailezs “Well I must not be as 1337 as you. I'm going to build a life size vinyl statue of this bitch and commence to face f#$k her it I can't beat her in game.” -TheMailMan78 I AM 1337!!

Nov 17, 2009, 07:59 PM	#12
zithe Join Date: Jun 2008 Location: North Chili, NY Posts: 2,646 (1.45/day) Thanks: 221 Thanked 350 Times in 310 Posts System Specs	Try another keyboard and mouse. I thought my parent's PC was dead and it baffled me for two months, then I took their tower into my room, used my own peripherals and all was well. Luckily we had a few keyboards lying around and a walmart nearby for a cheap mouse. __________________ “Fudzilla Confirms its fake!!! ]” -SammyHayabuza

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CRT/LCD Model:	LG 23" 1920x1080
Case:	Thermaltake v6
Sound Card:	SIIG IC-710012-S2 7.1 24-bit 96KHz PCI
PSU:	Corsair TX600W
Software:	Windows 7 Home Premium 64 bit

Nov 17, 2009, 08:00 PM	#13
Nailezs Join Date: Jul 2009 Location: DelMarVa Posts: 841 (0.59/day) Thanks: 156 Thanked 70 Times in 66 Posts System Specs	i couldnt remember if yellow was the ground or black...then i thought of the 4 pin molex connections, with 1 yellow 1 red and 2 black, and iw as like "black must be ground" but i've seen yellow be gorund in other industrys so that just stuck with me haha __________________ Disclaimer: 99% of the time I think I am right. If I am wrong, correct me. "I only ever made a mistake once in my life - but it was a mistake" - My Dad “i beat it on pc while chatting in steam and on vent. granted, it took me a few tries but it is do-able.” -Nailezs “Well I must not be as 1337 as you. I'm going to build a life size vinyl statue of this bitch and commence to face f#$k her it I can't beat her in game.” -TheMailMan78 I AM 1337!!

Nov 17, 2009, 08:14 PM	#18
Nailezs Join Date: Jul 2009 Location: DelMarVa Posts: 841 (0.59/day) Thanks: 156 Thanked 70 Times in 66 Posts System Specs	np __________________ Disclaimer: 99% of the time I think I am right. If I am wrong, correct me. "I only ever made a mistake once in my life - but it was a mistake" - My Dad “i beat it on pc while chatting in steam and on vent. granted, it took me a few tries but it is do-able.” -Nailezs “Well I must not be as 1337 as you. I'm going to build a life size vinyl statue of this bitch and commence to face f#$k her it I can't beat her in game.” -TheMailMan78 I AM 1337!!

Nov 18, 2009, 01:18 AM	#23
i789 Join Date: Sep 2009 Location: point roberts, wa Posts: 143 (0.11/day) Thanks: 0 Thanked 12 Times in 11 Posts	It seems that the PSU is down, try another one and see if the computer will boot up.

System Name:	el'lappy\|Cruncher \| Cruncher 2
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Cooling:	dual 80mm cooling fan \| Xiggy S1283 (WC'ing OTW) \|cheapo
Memory:	2x2gb ddr3 \| 2x2gb Ripjaws 1600 \|4x512mb D9s
Video Card:	onboard \| Asus DirectCU GTX460 1GB(+GTX 465 STB) \|8800GTS
Hard Disk:	Momuntus xt 320gb \|Kingston Hyper X 120gb SATA III\|500gb WD
Optical Drive:	DVD-RW \| None (STB blu-ray player,maybe) \|DVD-RW Lightscribe
CRT/LCD Model:	17in \| 40" 1080P HD TV
Case:	lappy case \| open air ATM (STB CM HAF XB) \|none yet
Sound Card:	onboard \| onboard \| onboard
PSU:	Dell powerbrick with Acer end \| Antec EW 650w \|Antec SP 350w(upg.soon)
Software:	Windows 7 Ult. 64bit---->------->

Nov 18, 2009, 01:44 AM	#25
Velvet Wafer Join Date: Jun 2009 Location: North of Germany Posts: 3,849 (2.63/day) Thanks: 2,288 Thanked 1,026 Times in 839 Posts System Specs	you were faster,pos __________________ CPU-Z validation sig pics temporarily blocked

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