New computer starts for 4 seconds then diest, don't know what to do anymore - Hardware & Software

So simply before I asked in the quick question thread but now I need some bug help. Yesterday my friend bought a new computer and I helped him build it. After we were done we tried to start it and it worked, but not the monitor. The card only had DVI and HDMI outputs so he had an DVI to VGA adapter (his monitor only has VGA) and tried. That did not work so we tought that the adapter might be broken. We tried again today with a couple of new adapters and cables. First we tried an adapter I had but it did not work so we tried and DVI to VGA cable, but when we connected it the computer did not want to start. I opened up and checked in the case and pluged in and out every cable is the computer but it did just not work. After 50 min, after I plugged out graphic card and all the cables and plugged them back in the computer started again. But only for like 3-4 seconds. It starts and every fan goes up in speed and then everything dies. I checked every cable so there is electricity everywere. I have a movie about the problem but I'm in school at the moment and can't get the film in to my computer. [b]TL;DR[/b] Computer starts for 3-4 sec and then dies. Thanks for the help if this makes any sense. [editline]25th August 2011[/editline] [b]old post[/b] [QUOTE=ica|kvantum;31924003]As you can read at the last page my friend bought a new computer today. I helped him build it but when we was done and was going to start we did notice the graphic card did not have any VGA output and his monitor (HP LE2201w) only have VGA inputs. My friend found an DVI to VGA adapter but when we started the PC the monitor was just black and said no signal. So the question is now. Can I have done something wrong when I did build it or is it that the adapter is broken? I have checked in the computer and everything is working in it and we did try to run the windows 7 CD but the monitor was still black. It's a brand new hdd btw if that makes any different. Thanks[/QUOTE] [editline]25th August 2011[/editline] Some random guy in class said it might be a power issue. The system is 6950 i5 2500 4gb ram 700W PSU

Possibly a power issue.

[QUOTE=Da_Maniac_;31934022]Possibly a power issue.[/QUOTE] Why might it be a power issue, 700W is more than enough for a single-gpu machine. Hell you could put two in and it'd be fine. Try resetting the cmos, that's usually the fix for most startup-related issues. Either that, or look and see if there's an error code displayed on the motherboard lcd thingy.

More details please, just show us the full list of parts, and I already asked before if you used standoffs and such, if you forgot the GPU power, and if it beeps. Tell us how it beeps like 1 long beep followed by 4 short ones, etc. [editline]25th August 2011[/editline] also take a clear picture of the PC with everything installed if possible.

Make sure the CPU power connector is on. (Should be 4+4 pin, or 8 pin.)

[QUOTE=Legend286;31934081]Why might it be a power issue, 700W is more than enough for a single-gpu machine. Hell you could put two in and it'd be fine. Try resetting the cmos, that's usually the fix for most startup-related issues. Either that, or look and see if there's an error code displayed on the motherboard lcd thingy.[/QUOTE] Gonna try that cmos thing when I get the time. [QUOTE=Shadaez;31934187]More details please, just show us the full list of parts, and I already asked before if you used standoffs and such, if you forgot the GPU power, and if it beeps. Tell us how it beeps like 1 long beep followed by 4 short ones, etc. [editline]25th August 2011[/editline] also take a clear picture of the PC with everything installed if possible.[/QUOTE] I will get picture as fast as I can. [editline]25th August 2011[/editline] [QUOTE=SataniX;31935101]Make sure the CPU power connector is on. (Should be 4+4 pin, or 8 pin.)[/QUOTE] It is. The computer started before. [editline]25th August 2011[/editline] [QUOTE=SataniX;31935101]Make sure the CPU power connector is on. (Should be 4+4 pin, or 8 pin.)[/QUOTE] It is. The computer started before.

Check to make sure the heatsink is mounted properly, those pushpins that hold it to the motherboard can come loose if they aren't pushed in far enough, or the pin isn't turned the right way. If that isn't the case, take the motherboard out of the case and build it up on a non-conductive surface (cardboard, plastic, countertop, etc.) and try turning it on. I had a motherboard once that refused to POST when put in any sort of PC case due to one of the mounting holes getting a short in it and grounding the board. I had to use rubber washers on all 9 mounting holes for it to work HNNG.

[QUOTE=bohb;31944191]Check to make sure the heatsink is mounted properly, those pushpins that hold it to the motherboard can come loose if they aren't pushed in far enough, or the pin isn't turned the right way. If that isn't the case, take the motherboard out of the case and build it up on a non-conductive surface (cardboard, plastic, countertop, etc.) and try turning it on. I had a motherboard once that refused to POST when put in any sort of PC case due to one of the mounting holes getting a short in it and grounding the board. I had to use rubber washers on all 9 mounting holes for it to work HNNG.[/QUOTE] A slight oversight of my own means I can only use 4 of my 6GB of RAM, because I didn't receive rubber standoffs for the backside of my aftermarket cooler, so I only used them on the front side which for some reason isn't good enough for Asus. I'll fix it when I upgrade though.

[QUOTE=Legend286;31944518]A slight oversight of my own means I can only use 4 of my 6GB of RAM, because I didn't receive rubber standoffs for the backside of my aftermarket cooler, so I only used them on the front side which for some reason isn't good enough for Asus. I'll fix it when I upgrade though.[/QUOTE] what

[QUOTE=Shadaez;31947711]what[/QUOTE] Dumb motherboard manufacturer, I guess. Basically forgot to put the rubber things inbetween the backplate and the mobo.

I think I might have found a problem. I took Legend286 advice and looked up cmos. I found this video and looked at it. [media]http://www.youtube.com/watch?v=Pdp_L5IxaNI&feature=channel_video_title[/media] After I read the motherboard guide and now I saw that there is no cmos "jumper(plug (or what to say))". Can that be a huge problem maybe? [editline]27th August 2011[/editline] [img_thumb]http://i.imgur.com/r362L.jpg[/img_thumb] [editline]27th August 2011[/editline] [img_thumb]http://i.imgur.com/kpUh2.jpg[/img_thumb] There is no power cord there. [editline]27th August 2011[/editline] Better pic [img_thumb]http://i.imgur.com/1RSeb.jpg[/img_thumb]

[QUOTE=Legend286;31956084]Dumb motherboard manufacturer, I guess. Basically forgot to put the rubber things inbetween the backplate and the mobo.[/QUOTE] never even heard of those [editline]27th August 2011[/editline] [QUOTE=ica|kvantum;31969139]words[/QUOTE] Does the PC beep? And I don't think that a missing jumper from that would cause that big a failure, could you tell us the motherboard model, too?

[QUOTE=Shadaez;31969643]never even heard of those [editline]27th August 2011[/editline] Does the PC beep? And I don't think that a missing jumper from that would cause that big a failure, could you tell us the motherboard model, too?[/QUOTE] The PC does not even start. This is the mobo [url]http://www.asus.com/Motherboards/Intel_Socket_1155/P8P67_LE/[/url]

If you got some electrical wire or some metal wire you could connect the pins using that.

tried with a screwdriver to connect the pins. Didn't work. I'm sure it's the mobo, and will see if I can have that exchanged.

you said it started for 4 seconds then dies, now it doesn't at all?

[QUOTE=Shadaez;31974999]you said it started for 4 seconds then dies, now it doesn't at all?[/QUOTE] Exactly. I have tried the psu and graphic card in another computer and those works in that. [editline]28th August 2011[/editline] But before it beeped. If I remeber right it was 1 long beep and then 4 shorts and then it died.

[QUOTE=ica|kvantum;31970563]tried with a screwdriver to connect the pins. Didn't work. I'm sure it's the mobo, and will see if I can have that exchanged.[/QUOTE] Did you try taking the entire motherboard out of the case and powering it on?

Going from 4 to completely dead, you may have caused ESD damage from working on it. Get that shit exchanged son

[QUOTE=Michael haxz;31981386]Going from 4 to completely dead, you may have caused ESD damage from working on it. Get that shit exchanged son[/QUOTE] It's nearly impossible to damage a board from ESD, unless you do something inordinately dumb like put the motherboard next to a van-d-graaf generator.

[QUOTE=bohb;31982104]It's nearly impossible to damage a board from ESD, unless you do something inordinately dumb like put the motherboard next to a van-d-graaf generator.[/QUOTE] You can do it by simply touching it without wearing a ESD strap or gloves.

Oh wow. I got it run but I get no image on the monitor. I took the screwdriver at the pins where the cmos power cord is suppose to be and it started. I have a video on way. [editline]28th August 2011[/editline] [media]http://www.youtube.com/watch?v=CjD1GkEYbWY[/media]

[QUOTE=Michael haxz;31985874]You can do it by simply touching it without wearing a ESD strap or gloves.[/QUOTE] I've built dozens of computers on carpet and other surfaces that create ESD and they're all fine. I've also had 1" sparks jump from my index finger to leads on a GPU while it was running (several times) and absolutely nothing happened, the machine kept running. You can't tell me that not wearing gloves (which themselves create static) or a hand strap is going to fry computer components. [QUOTE=ica|kvantum;31992172]Oh wow. I got it run but I get no image on the monitor. I took the screwdriver at the pins where the cmos power cord is suppose to be and it started. I have a video on way.[/QUOTE] You aren't supposed to do a CMOS reset while the power is plugged in, now that can damage a board since there's almost always a VCC line to deal with. Instead, take the battery out and unplug the machine from the wall for 2-3 minutes.

[QUOTE=bohb;31994501]You aren't supposed to do a CMOS reset while the power is plugged in, now that can damage a board since there's almost always a VCC line to deal with. Instead, take the battery out and unplug the machine from the wall for 2-3 minutes.[/QUOTE] Done that already. The motherboard is really fucked up. Gonna get it exchanged tomorow.

Just bump to say that the computer works now. Changed the motherboard and it worked. Thanks for helping out in the thread guys. Really appreciated.