hi, i need a answer about my cpu. i just built a new system. i connected vga card, ram, cpu AND HD and turn it on, ALL FANS WHERE SPINNING, BUT THE NO VIDEO CAME UP. I TRIED CLEARLY THE CMOS THAT DID NOT HELP. I NEED TO KNOW THAT IF MY CPU WENT DEAD. LIKE I SAID WHEN I POWER IT UP NOTHING BUT THE FANS WERE SPINNING AND NO VIDEO SIGNAL AND NO BEEPS!!!! PLEASE REPLY. OR COULD IT BE MOBO
Dead cpu
- Thread starter vpu3
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Need more info.
Is there a 4-pin 12v connector on the motherboard? Newer mainboards will do precisely as you have mentioned if you neglect to also plug in the 4-pin 12v power lead into the motherboard.
Also, try arranging the memory around or reseating it. Ensure you also have the case speaker connected properly as many hardware problems will produce beeps out the speaker to help diagnose what may be at fault.
Is there a 4-pin 12v connector on the motherboard? Newer mainboards will do precisely as you have mentioned if you neglect to also plug in the 4-pin 12v power lead into the motherboard.
Also, try arranging the memory around or reseating it. Ensure you also have the case speaker connected properly as many hardware problems will produce beeps out the speaker to help diagnose what may be at fault.
DonNagual
Posts: 2,385 +5
I'd take the mobo out, reset your CMOS using the jumpers (read your manual to find the correct jumpers) and set it on a box beside the case. Remove everything but the following:
-CPU/heatsink
-one stick of ram
-if you don't have integrated graphics, then insert the graphics card (with PSU connection if needed)
-PSU connections to the motherboard (usually two)
-if your case has a speaker, connect it to the motherboard
-connect the monitor to the graphics card.
then use a screwdriver to quickly short the two pins normally connected to the case's power on switch. This will attempt to turn on your system. You should be able to get into your bios this way.
If not, do you get any beeps? Does your motherboard have LED lights? What color (before and after shorting the pins).
If you need further help, probably a good idea to post your full system specs as well.
-CPU/heatsink
-one stick of ram
-if you don't have integrated graphics, then insert the graphics card (with PSU connection if needed)
-PSU connections to the motherboard (usually two)
-if your case has a speaker, connect it to the motherboard
-connect the monitor to the graphics card.
then use a screwdriver to quickly short the two pins normally connected to the case's power on switch. This will attempt to turn on your system. You should be able to get into your bios this way.
If not, do you get any beeps? Does your motherboard have LED lights? What color (before and after shorting the pins).
If you need further help, probably a good idea to post your full system specs as well.
DonNagual
Posts: 2,385 +5
The reason I am asking you to take your motherboard out and try, is because there is a high possibility that your motherboard is touching the case somewhere and shorting out. That is one possible cause of a POST failure (no beeps).
By removing it from the case (and following the steps above) it helps to rule out as much as possible (the goal of troubleshooting).
By removing it from the case (and following the steps above) it helps to rule out as much as possible (the goal of troubleshooting).
DonNagual
Posts: 2,385 +5
Well, I think you may have found your problem then. You need all the standoffs (as many as there are screwholes in your motherboard).
Without them, your motherboard will touch the case, and POST will fail. It is actually quite dangerous to your parts so I would unplug immediately. There is a chance that your motherboard will be permanently damaged.
Without them, your motherboard will touch the case, and POST will fail. It is actually quite dangerous to your parts so I would unplug immediately. There is a chance that your motherboard will be permanently damaged.
DonNagual
Posts: 2,385 +5
Usually no beep means one of the following:
1. dead cpu
2. dead motherboard
3. motherboard shorting out on the case
4. parts not seated properly
5. ram issues (although usually you get a beep error here, some systems will give a no beep for faulty/incompatable ram)
6. dead psu
7. no speaker/speaker not connected properly
1. dead cpu
2. dead motherboard
3. motherboard shorting out on the case
4. parts not seated properly
5. ram issues (although usually you get a beep error here, some systems will give a no beep for faulty/incompatable ram)
6. dead psu
7. no speaker/speaker not connected properly
Tedster
Posts: 5,746 +14
KingCody
Posts: 964 +8
are you certain that your RAM is compatible with your CPU/mobo? try each stick of RAM independently and in different slots
are you certain that your CPU is compatible with your mobo and BIOS version?
although it is possible, it is very unlikely to be a dead CPU. a bad CPU, mobo, or RAM should all give error beeps if they are bad.
my guess would be a bad or insufficient power supply. what brand/model is your power supply? how many amps on the +12v? PSU total wattage means nothing, the +12v amperage is the most important factor in determining if your PSU can handle your system.
are you certain that your CPU is compatible with your mobo and BIOS version?
although it is possible, it is very unlikely to be a dead CPU. a bad CPU, mobo, or RAM should all give error beeps if they are bad.
my guess would be a bad or insufficient power supply. what brand/model is your power supply? how many amps on the +12v? PSU total wattage means nothing, the +12v amperage is the most important factor in determining if your PSU can handle your system.
KingCody
Posts: 964 +8
that's an interesting mobo, from what I read about it it is set by default to socket-754. this means that your RAM has to be in the slots (2 slots total) next to the 754 socket.
***if you are using a socket-939 CPU, then your RAM has to be the slots (4 slots total) next to the 939 socket, and all the jumpers need to be moved (both data and power distribution)
Given the specific mobo you're using, it would seem likely that all your components are fine, you just may not have it set up properly (a mobo like that can be confusing)
We need some more specs:
1. CPU model (939 or 754)
2. RAM model (brand and model#)
3. PSU specs ("my PSU is 450" says nothing about it, like I said in my post above total PSU wattage means nothing. what brand is it and how many amps does it provide on the +12v)
***if you are using a socket-939 CPU, then your RAM has to be the slots (4 slots total) next to the 939 socket, and all the jumpers need to be moved (both data and power distribution)
Given the specific mobo you're using, it would seem likely that all your components are fine, you just may not have it set up properly (a mobo like that can be confusing)
We need some more specs:
1. CPU model (939 or 754)
2. RAM model (brand and model#)
3. PSU specs ("my PSU is 450" says nothing about it, like I said in my post above total PSU wattage means nothing. what brand is it and how many amps does it provide on the +12v)
KingCody
Posts: 964 +8
the amperage info is written on the spec label on the side if the PSU case.vpu3 said:
how did you blow a fuse? please tell me you didn't open it up and short it out
again, these are unlikely to be the problem. you should eliminate the more likely causes before buying a new CPU and mobo. most new build problems are caused by human error and not faulty components.vpu3 said:
in the last couple posts I asked you certain questions in order to help you diagnose the problem, yet you seem unwilling to answer them. I'm afraid that I can't help you any more unless you help me (and others) understand what you are using and how you set it up.
mod-newbie
Posts: 26 +0
dont ever open a psu and stick probes into it! you are lucky that all you did was blow a fuse man!
CrossFire851
Posts: 714 +0
vpu3 said:
When it was on?
Well Now I Took The Mobo Back Out Of The Case Work Fine. Put Back In The Case With All Stand Off Tighten It Down Motherboard Died. I Think The Case Kill My Mobo. And The Way I Put My Stand Offs. Luckily I Got Another Mobo On The Way.
Bad Mobo= No Power At All
Bad Cpu= Case Fan, Cpu Fan, Power Fan, No Beep No Video. This Sums It Up.
Bad Mobo= No Power At All
Bad Cpu= Case Fan, Cpu Fan, Power Fan, No Beep No Video. This Sums It Up.
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