Recently I was gaming, when I had the dreaded BSoD. It was dumping memory and I hit the power button in fury before it finished (admittedly I didnt see it was dumping untill it was too late)
When I turned it back on, it didnt post, there is no power from my USB ports to the mouse / keyboard, and no signal to my monitor. And all the lights on my HD4890 were stuck on red. All the fans and fan lights come on, the dvd drive still opens etc.
Initially I thought it was the graphics card as all the lights of doom were on, and according to the internet, thats a bad thing for the HS4890. So i brought a HD 5770 and alas, its still not sorted.
Things to note are;
- One of my HDD's makes an odd clicking sound intermittently, but I have been advised this wouldnt stop it posting
- When i plug my new gfx card into the top PCI-e slot, and turn the power on, the fan goes mental and its really noisy, but when i plug it into the lower ones, it starts up quiet and normal.
- Thar be dust in them components - Although i cleaned most of it out.
- Asus P5N Sli deluxe
- 4 gb ram (Kingston or something)
- 700w PSU
I hate watching TV, when i come home from a 12 hour day, I chill out on the PC instead, so any help resolving my problem will be greatly appreciated!
Is there any other way to check the PSU or MOBO? Ive got a young family so no free parts laying around or much money to buy them if i dont know that they are the problem!
Just to note, my current PSU has a digital display for power useage. When I unplugged my gfx card It sat at a reading of 065 and when i was fiddling about it went up to 068. I noticed when things were fine It was running at like 200+ or something. But as I have the Antec 900 case, It may be upside down lol, so i may be reading it backwards!!
I doubt you were reading it upside down, there should be no reason your PSU is putting out 890 watts, even 500 consistant watts would be excessive.
Although uncommon dust can cause short circuits. Probably not the issue but a possibility.
If you're getting absolutely no post i'd peg the PSU, Board, or Chip. PSU either not properly supplying power, probably to the chip, the chip's gone bad or the board's gone bad.
Check your board to see if there are any obvious issues (leaking/bulging capacitors, Scorch marks, etc.) it's possible something went south which is what caused your BSoD. It's unfortunate you didn't get the STOP error as that can give lots of help in these situations.
Breadboard with just motherboard, CPU & HSF, case speaker, and PSU.
Make sure you plug the CPU power cable in. The system will not boot without it.
I always breadboard a new build. It takes only a few minutes, and you know you are putting good parts in the case once you are finished.
You can turn on the PC by momentarily shorting the two pins that the case power switch goes to. You should hear a series of long, single beeps indicating memory problems. Silence indicates a problem with (in most likely order) the PSU, motherboard, or CPU. Remember, at this time, you do not have a graphics card installed so the load on your PSU will be reduced.
If no beeps: Running fans and drives and motherboard LED's do not necessarily indicate a good PSU. In the absence of a single short beep, they also do not indicate that the system is booting.
At this point, you can sort of check the PSU. Try to borrow a known good PSU of around 550 - 600 watts. That will power just about any system with a single GPU. If you cannot do that, use a DMM to measure the voltages. Measure between the colored wires and either chassis ground or the black wires. Yellow wires should be 12 volts. Red wires: +5 volts, orange wires: +3.3 volts, blue wire : -12 volts, violet wire: 5 volts always on. Tolerances are +/- 5% except for the -12 volts which is +/- 10%.
The gray wire is really important. It should go from 0 to +5 volts when you turn the PSU on with the case switch. CPU needs this signal to boot.
A way that might be easier is to use the main power plug. Working from the back of the plug where the wires come out, use a bare paperclip to short between the green wire and one of the neighboring black wires. That will do the same thing with an installed PSU. It is also an easy way to bypass a questionable case power switch.
This checks the PSU under no load conditions, so it is not completely reliable. But if it can not pass this, it is dead. Then repeat the checks with the PSU plugged into the computer to put a load on the PSU.
If the system beeps:
If it looks like the PSU is good, install a memory stick. Boot. Beep pattern should change to one long and several short beeps indicating a missing graphics card.
Silence, long single beeps, or series of short beeps indicate a problem with the memory. If you get short beeps verify that the memory is in the appropriate motherboard slots.
Insert the video card and connect any necessary PCIe power connectors. Boot. At this point, the system should POST successfully (a single short beep). Notice that you do not need keyboard, mouse, monitor, or drives to successfully POST. At this point, if the system doesn't work, it's either the video card or an inadequate PSU. Or rarely - the motherboard's PCIe interface.
Now start connecting the rest of the devices starting with the monitor, then keyboard and mouse, then the rest of the devices, testing after each step. It's possible that you can pass the POST with a defective video card. The POST routines can only check the video interface. It cannot check the internal parts of the video card.
Upon playing around for a couple hours last night, I realised that when I plug my keyboard into the USB port when the pc is powered on, the lights come on (it glows blue) then after half a second flicker back off.
Does that sound more like a PSU issue? I know the power comes through the mobo, so may be hard to tell.