# computer will not POST **URL:** \ **Category:** NYSpeed Off Topic\ **Created:** [December 15, 2006, 3:40pm UTC](https://forums.speedlife.net/t/computer-will-not-post/21717 "2006-12-15T15:40:38Z")\ **Posts on this page:** 19\ **Page:** 1
**Author:** ![boardjnky4](https://avatars.discourse-cdn.com/v4/letter/b/96bed5/32.png) [@boardjnky4](https://forums.speedlife.net/u/boardjnky4)\ **Post date:** [December 15, 2006, 3:40pm UTC](https://forums.speedlife.net/t/computer-will-not-post/21717/1 "2006-12-15T15:40:38Z")
so im building a computer Pentium D 805 AsRock mobo 775i945GL buffalo ram 512kb computer will not post, does not beep at all either. cpu fan runs, cd rom drive light comes on. the psu is older and def not a 300w unit. can this cause the computer not to POST at all? i have disconnected all peripherals to rule out hd/cdrom failure. no beeps, nothing on the screen(onboard video). i re-seated the ram, that didnt help. im gonna try and re-seat the cpu at a later date. anything else i can try? ---
**Author:** ![Bacon](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/bacon/32/7230_2.png) [@Bacon](https://forums.speedlife.net/u/Bacon)\ **Post date:** [December 15, 2006, 4:19pm UTC](https://forums.speedlife.net/t/computer-will-not-post/21717/2 "2006-12-15T16:19:46Z")
Reseat CPU Pull the CMOS battery Unplug any attached devices from the computer and see if it posts Make sure the motherboard isn’t grounded to the case somehow. (Stray screw, poor manufacturing, etc.) Try another power supply About the only 5 things I can think of that you havn’t tried yet. ---
**Author:** ![LZ1](https://avatars.discourse-cdn.com/v4/letter/l/7ab992/32.png) [@LZ1](https://forums.speedlife.net/u/LZ1)\ **Post date:** [December 15, 2006, 4:28pm UTC](https://forums.speedlife.net/t/computer-will-not-post/21717/3 "2006-12-15T16:28:39Z")
Did you screw the motherboard directly into the case with out using stand offs? lol Is their a extra power connector for the CPU? ---
**Author:** ![boardjnky4](https://avatars.discourse-cdn.com/v4/letter/b/96bed5/32.png) [@boardjnky4](https://forums.speedlife.net/u/boardjnky4)\ **Post date:** [December 15, 2006, 10:56pm UTC](https://forums.speedlife.net/t/computer-will-not-post/21717/4 "2006-12-15T22:56:07Z")
def. no random screws grounding it out. all devices are unplugged im gonna re-seat the cpu tomorow and clear the cmos. i that doesnt work im gonna hit up comp usa and pick up a power supply. i have a feeling theres just not enough juice to run everything in any of my power supplies. ---
**Author:** ![ryanmcell](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ryanmcell/32/7510_2.png) [@ryanmcell](https://forums.speedlife.net/u/ryanmcell)\ **Post date:** [December 16, 2006, 5:20am UTC](https://forums.speedlife.net/t/computer-will-not-post/21717/5 "2006-12-16T05:20:39Z")
sounds like a power supply issue to me, also check to make sure that you have the psu on the proper v. I remember I bought a used psu and it was set for 235 or w/e the alt. setting is instead of 115 and wouldnt boot. switched and bam. ---
**Author:** ![OfficerK](https://avatars.discourse-cdn.com/v4/letter/o/4da419/32.png) [@OfficerK](https://forums.speedlife.net/u/OfficerK)\ **Post date:** [December 16, 2006, 5:32am UTC](https://forums.speedlife.net/t/computer-will-not-post/21717/6 "2006-12-16T05:32:56Z")
have you tried actually listening to see if the PS tries to kick on at all? ---
**Author:** ![JustinH](https://avatars.discourse-cdn.com/v4/letter/j/9fc29f/32.png) [@JustinH](https://forums.speedlife.net/u/JustinH)\ **Post date:** [December 16, 2006, 5:52am UTC](https://forums.speedlife.net/t/computer-will-not-post/21717/7 "2006-12-16T05:52:33Z")
a dual core intel, and your using a shit power supply? Order one online. If you need one TODAY. Then I can recommend the compusa House brand. Someone else makes them for crapusa they are good quality (at least last year they were). If you run into troubles I’m an A+ tech that does house calls. ---
**Author:** ![boardjnky4](https://avatars.discourse-cdn.com/v4/letter/b/96bed5/32.png) [@boardjnky4](https://forums.speedlife.net/u/boardjnky4)\ **Post date:** [December 16, 2006, 6:19am UTC](https://forums.speedlife.net/t/computer-will-not-post/21717/8 "2006-12-16T06:19:53Z")
^^^werd, compusa it is im in long island now, but maybe we can troubleshoot over the phone i it comes down to that ---
**Author:** ![boardjnky4](https://avatars.discourse-cdn.com/v4/letter/b/96bed5/32.png) [@boardjnky4](https://forums.speedlife.net/u/boardjnky4)\ **Post date:** [December 16, 2006, 6:20am UTC](https://forums.speedlife.net/t/computer-will-not-post/21717/9 "2006-12-16T06:20:39Z")
> [@OfficerK](#): > > have you tried actually listening to see if the PS tries to kick on at all? cpu fan runs and the cd-rom drive is spinning ---
**Author:** ![OfficerK](https://avatars.discourse-cdn.com/v4/letter/o/4da419/32.png) [@OfficerK](https://forums.speedlife.net/u/OfficerK)\ **Post date:** [December 16, 2006, 6:32am UTC](https://forums.speedlife.net/t/computer-will-not-post/21717/10 "2006-12-16T06:32:39Z")
ok could definitly be a lack of power, but it is also likely the mobo or processor, kind of had the same issue building a computer, got the mobo and processor replaced and it booted just fine with the same PS ---
**Author:** ![ryanmcell](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ryanmcell/32/7510_2.png) [@ryanmcell](https://forums.speedlife.net/u/ryanmcell)\ **Post date:** [December 16, 2006, 6:43am UTC](https://forums.speedlife.net/t/computer-will-not-post/21717/11 "2006-12-16T06:43:40Z")
also i dunno or not (my past couple mobo’s have) but have you checked to see if your mobo has obd? It should have an lcd readout with alphanumeric reading to refer to your manual for the diagnostic code. ---
**Author:** ![Vile](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/vile/32/7595_2.png) [@Vile](https://forums.speedlife.net/u/Vile)\ **Post date:** [December 16, 2006, 7:36am UTC](https://forums.speedlife.net/t/computer-will-not-post/21717/12 "2006-12-16T07:36:06Z")
never chince on PSU. ---
**Author:** ![Jon](https://avatars.discourse-cdn.com/v4/letter/j/3bc359/32.png) [@Jon](https://forums.speedlife.net/u/Jon)\ **Post date:** [December 16, 2006, 10:23am UTC](https://forums.speedlife.net/t/computer-will-not-post/21717/13 "2006-12-16T10:23:56Z")
With a P4 you need a PSU that has the 4 pin CPU connector,without that it wont boot.I dont know how old of a PSU you are using but it has to have this to work… ![http://www.atxpowersupplies.com/images/p4-connector-200x142.gif](http://www.atxpowersupplies.com/images/p4-connector-200x142.gif) ---
**Author:** ![boardjnky4](https://avatars.discourse-cdn.com/v4/letter/b/96bed5/32.png) [@boardjnky4](https://forums.speedlife.net/u/boardjnky4)\ **Post date:** [December 16, 2006, 10:36am UTC](https://forums.speedlife.net/t/computer-will-not-post/21717/14 "2006-12-16T10:36:59Z")
:word: ,the old one didnt. got the new psu and its working nicely. i figured the psu was the problem. ---
**Author:** ![ryanmcell](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ryanmcell/32/7510_2.png) [@ryanmcell](https://forums.speedlife.net/u/ryanmcell)\ **Post date:** [December 16, 2006, 10:43am UTC](https://forums.speedlife.net/t/computer-will-not-post/21717/15 "2006-12-16T10:43:13Z")
good to hear ---
**Author:** ![boardjnky4](https://avatars.discourse-cdn.com/v4/letter/b/96bed5/32.png) [@boardjnky4](https://forums.speedlife.net/u/boardjnky4)\ **Post date:** [December 16, 2006, 11:11am UTC](https://forums.speedlife.net/t/computer-will-not-post/21717/16 "2006-12-16T11:11:29Z")
posting from it now. got windows installed real smooth. time for the osx86 dual-boot. this is usually about the time when the shit hits the fan ---
**Author:** ![LZ1](https://avatars.discourse-cdn.com/v4/letter/l/7ab992/32.png) [@LZ1](https://forums.speedlife.net/u/LZ1)\ **Post date:** [December 16, 2006, 11:16am UTC](https://forums.speedlife.net/t/computer-will-not-post/21717/17 "2006-12-16T11:16:56Z")
> [@FormulaLS1](#): > > Is their a extra power connector for the CPU? :word: _cough_ ---
**Author:** ![boardjnky4](https://avatars.discourse-cdn.com/v4/letter/b/96bed5/32.png) [@boardjnky4](https://forums.speedlife.net/u/boardjnky4)\ **Post date:** [December 16, 2006, 12:17pm UTC](https://forums.speedlife.net/t/computer-will-not-post/21717/18 "2006-12-16T12:17:41Z")
> [@FormulaLS1](#): > > :word: _cough_ yeah i didnt quite get what u were saying. the psu didnt have that plug so assumed everything was plugged in correctly. when i looked at the psu in the store i was like, “ohhhhhhhhhhhhhhhhhhhhhh, thats probably why its not working” ---
**Author:** ![LZ1](https://avatars.discourse-cdn.com/v4/letter/l/7ab992/32.png) [@LZ1](https://forums.speedlife.net/u/LZ1)\ **Post date:** [December 16, 2006, 1:05pm UTC](https://forums.speedlife.net/t/computer-will-not-post/21717/19 "2006-12-16T13:05:59Z")
I got a computer brandnew from acer in for a customer…took it out of the box turned it on and was like uhhh wtf brand new computer…somehow the plug for the CPU fell out inshipping.