|
So, for quite some while now my pc have not been working. I've ruled out the motherboard, graphic card, screen, and memory. With that said: My PC gets power, the fans seems to work properly, and there is no error beep(Yes, there is a speaker connected, and i checked that it works), but there is no reaction on the screen. It's been so long since it booted, I can't even remember if it was supposed to give a single beep during startup that many computers does. =/ So it has to be the PSU or CPU I guess. But shouldn't there be some error message if it was the CPU? And would every components seem to run fine if it was the PSU? Oh, in addition, the pc starts up, and I can turn it on and off fine, don't have to kill it with the PSU button. The motherboard is a Intel dx58s0 , its an i7 processor(with the standard bad stock fan), and Corsair HX650W PSU.
Suggestions for ruling out wether it's the PSU or CPU? (Don't have extras)
|
http://www.intel.com/support/motherboards/desktop/sb/cs-010249.htm this is a page that tells your beep codes for your motherboard I had trouble with my moherboard a while back that sounded similiar although mine was a graphics card but i also tried somthing else that might help you. Reset the CMOS by jumper . If you have anything in any expansion slot try removing it. If you cant find the CMOS jumper, unplug the computer and wait for power to leave motherboard and remove battery onboard for 10 seconds or so and replace. the battery looks kind of like a watch battery (not sure if you built comp yourself or are able to do this since i dont know your tech level at all. you can also try resetting your ram other than that im not to sure.
P.S. also check for your led on the front of your computer it also displays a blink code that might be usefull i hope some of this information is relevant to your situation. Always stinks when its somthing simple holding you back best to try everything out and GL
|
From what you have said I don't know how you can draw the conclusion that the problem is the PSU or CPU? Anyway test with a different CPU and PSU and you will soon find out if they are the problem or not
|
On November 24 2012 02:28 RogerRus wrote: I've ruled out the motherboard, graphic card, screen, and memory.
Tell us how you did that. I'm especially curious about why you're certain it's not the motherboard.
|
I've tried resetting CMOS, and also tried removing the battery on the motherboard for a minute. And my main headache is that there is no beep, and when I turn the pc on, the power light in front seems to be constant =/ But thanks for the tips.
It's not the motherboard, because I've sent it in, and got it back saying its fine + a bill. I've tried 4 different graphic cards, of different connection types, and I've tried with 4 different memory blocks, two of them whom was working fine my media-pc. And as I said, I don't got spare parts of CPU and PSU to see if it works. The other PSU's I've got doesn't got enough power, and none of the other CPU's I got fits on that socket.
|
On November 24 2012 04:53 RogerRus wrote:The other PSU's I've got doesn't got enough power I doubt it. You don't need anywhere near 650W to power up a system. Anything >16A 12V should be plenty as long as you pulled all the drives.
Changing a PSU is the only sure way to test whether it's the problem.
|
On November 24 2012 05:22 jaj22 wrote: Changing a PSU is the only sure way to test whether it's the problem.
Might be. But is there no way to rule out CPU problems? I find it so weird that there wouldn't be some kind of reaction from the motherboard or anything if the CPU was fucked up. But the only information I can find is that it would tell me if its seriously overheated.
|
On November 24 2012 05:37 RogerRus wrote:Show nested quote +On November 24 2012 05:22 jaj22 wrote: Changing a PSU is the only sure way to test whether it's the problem.
Might be. But is there no way to rule out CPU problems? I find it so weird that there wouldn't be some kind of reaction from the motherboard or anything if the CPU was fucked up. But the only information I can find is that it would tell me if its seriously overheated.
If the CPU won't work at all, that's the exact issue you'll have. Have you tried remounting it and checking so that no pins are damaged or bent?
|
On November 24 2012 05:37 RogerRus wrote:Show nested quote +On November 24 2012 05:22 jaj22 wrote: Changing a PSU is the only sure way to test whether it's the problem.
Might be. But is there no way to rule out CPU problems? I find it so weird that there wouldn't be some kind of reaction from the motherboard or anything if the CPU was fucked up. But the only information I can find is that it would tell me if its seriously overheated. If your PSU isn't working correctly, it's impossible to prove that anything attached to it is working correctly.
In addition, the motherboard generally knows nothing about the CPU, unless you count the basic information about what voltage and frequency to feed it with. When you start the PC, the CPU just starts executing BIOS code.
There is a trick you can use to demonstrate some basic CPU/motherboard functionality. One of the first things the BIOS code does is check the memory, so if you power up the PC without RAM, you'll normally get persistent beeping from the PC speaker. However, this only proves that the CPU or motherboard are partially functional, so it's not actually very useful as a diagnostic.
|
You can connect your PSU from MediaPc to your Gaming Pc board only having only the following connected :
Speaker and CPU (even with heatsink removed for a short period) . On startup it should now give beepcodes for missing Ram. If it does not, your CPU is faulty, if you have ruled out the mainboard.
Its not necessary that the ATX-Cable has the same number of channels ( i believe that 20pin works in 24 pin boards), but if you need (2x)4 yellow/black connectors for your CPU you should provide that.
|
Try taking the cpu out and putting it back in. Sounds stupid but it works.
|
Okay, even switched around the PSU's now, and didn't make any difference(The PSU works in the media-pc, the media-PSU isn't making any difference on my main-pc). So only part I havent tried switching out is the CPU, so I guess that should be the problem. But I still think its really weird that there wouldn't be any error beeps or lights when the CPU isn't working. Oh well, thanks for the input guys.
Edit: Oh, and I had to take the CPU out and back on when I sent in the motherboard, and that didn't help any.
Edit2:
On November 24 2012 09:15 jaj22 wrote: If your PSU isn't working correctly, it's impossible to prove that anything attached to it is working correctly.
In addition, the motherboard generally knows nothing about the CPU, unless you count the basic information about what voltage and frequency to feed it with. When you start the PC, the CPU just starts executing BIOS code.
There is a trick you can use to demonstrate some basic CPU/motherboard functionality. One of the first things the BIOS code does is check the memory, so if you power up the PC without RAM, you'll normally get persistent beeping from the PC speaker. However, this only proves that the CPU or motherboard are partially functional, so it's not actually very useful as a diagnostic.
My motherboard does beep when I take out the memory, but would that really prove that my CPU is working at all? Are you sure it's not just a inbuilt check from the MB? And I would presume if the BIOS got to run at all, that would actually show up on the screen, if my motherboard&graphic card(s) is working properly?
On November 24 2012 09:42 plgElwood wrote: On startup it should now give beepcodes for missing Ram. If it does not, your CPU is faulty, if you have ruled out the mainboard.
But if it does give beep codes, the CPU is working? I've switched out graphic card(s), memory blocks, and PSU, all one by one, and every part works fine in the other PC, and the parts from my other PC does not make any difference.
|
On November 25 2012 01:02 RogerRus wrote: My motherboard does beep when I take out the memory, but would that really prove that my CPU is working at all? Are you sure it's not just a inbuilt check from the MB?
It's the standard x86 boot process. One of the first things the CPU does is test the RAM, because it needs it for later stages. Motherboard manufacturers wouldn't add extra hardware to test something that the CPU can test a lot better.
On November 25 2012 01:02 RogerRus wrote: And I would presume if the BIOS got to run at all, that would actually show up on the screen, if my motherboard&graphic card(s) is working properly?
Not necessarily. VGA initialisation may be relatively late in the POST process.
On November 25 2012 01:02 RogerRus wrote: But if it does give beep codes, the CPU is working?
Working to some extent, but not necessarily fault-free. Mind you, CPUs almost never fail unless you physically damage or overvolt them.
I assume you're testing with nothing unnecessary connected? No USB devices, no drives, no front panel crap?
|
Yeah, thats why I'm so little willing to believe it's the CPU... None of this makes any sense to me. I've never had trouble figuring out whats troubling a pc before, but this is just so weird. Everything seems to work, but it just doesn't.
Close to no crap... I did connect the power button crap from the front panel, but I'm 100% sure its connected correctly.
Oh well, I'll try to find a friend with the same socket and try everything out, after I'm done with my exams for the semester. Unless someone comes with a good tip for other things for me to try out before that time.
|
|
|
|