Hi all,
I've recently been having a lot of problems with my PC since moving, but it could just be coincidence. First off in relation to Corsair I have an AX750 gold rated fully modular PSU.
About 2 weeks after I moved into this place my PC died. It wouldn't turn on at all. After troubleshooting for a while I found if I removed the CMOS battery I could get the system to turn on intermittently but I could only make it to the BIOS. My system would never boot no matter what settings were saved in the BIOS. Upon saving the settings and rebooting, the system would start up momentarily then shut down, then it would not power again unless I did the same thing with the CMOS battery.
I RMA'd the motherboard because I figured something must have been wrong with it, as I did a paperclip test with the power supply and found that it would turn on and power all the accessories.
After getting a replacement motherboard (I use an Asus P8Z77-M Pro) I hooked it up to test (with only necessary hardware) and it worked fine. So I added hardware piece by piece and everything seemed dandy.
My system worked for about another 2-3 weeks, but then again it just died 2 or 3 days ago with the exact same problem. The system will not power on at all. I have tried the same troubleshooting I did previously but this time nothing works. It will not power on at all, though the green motherboard LED power light is on.
Now, I'm starting to wonder if the power in the house is causing some kind of issue so I bought a digital multimeter to test the outlet. I found it giving 118.3 to 121.5 volts in the ~30 minutes I monitored it for, so I thought that sounded fine. I also confirmed the grounding was wired properly. I also checked my surge protector and it says it is still protecting so I know that hasn't been fried, and it also has a light showing that Ground is proper.
So then I started looking into solutions for any power issues. Like a UPS with automatic voltage regulation, or a power line conditioner which also regulates voltage. But then I thought well, does it really even matter because the power supply should be doing that anyway, shouldn't it? Afterall it's converting AC to DC anyway. So I looked up the specs of my power supply and noticed a few things.
"Over-voltage and over-current protection, under-voltage protection, and short circuit protection provide maximum safety to your critical system components"
as well as it having Active Power Factor Correction
"Active Power Factor Correction also markedly diminishes total harmonics, automatically corrects for AC input voltage, and is capable of a full range of input voltage."
So based on these, even if there is some fluctuation in the input AC voltage, the PSU should be capable of correcting for this, unless there is an issue with it.
I have already submitted an RMA request with Corsair for the PSU as it has a 7 year warranty and I only bought it 2 years ago, because I can't think of any other reason for this to happen other than bad power coming from my PSU.
But I am looking for some more opinions on power, power supplies, and for possible causes of my motherboard dying out on me, TWICE. I know the house has questionable power sometimes because I do see the lights dimming out and stuff quite often, but the power supply should be able to handle this.
I monitor the temps of my system regularly and there was no overheating that I am aware of, unless it was in the PSU itself which I am not able to monitor.
I've recently been having a lot of problems with my PC since moving, but it could just be coincidence. First off in relation to Corsair I have an AX750 gold rated fully modular PSU.
About 2 weeks after I moved into this place my PC died. It wouldn't turn on at all. After troubleshooting for a while I found if I removed the CMOS battery I could get the system to turn on intermittently but I could only make it to the BIOS. My system would never boot no matter what settings were saved in the BIOS. Upon saving the settings and rebooting, the system would start up momentarily then shut down, then it would not power again unless I did the same thing with the CMOS battery.
I RMA'd the motherboard because I figured something must have been wrong with it, as I did a paperclip test with the power supply and found that it would turn on and power all the accessories.
After getting a replacement motherboard (I use an Asus P8Z77-M Pro) I hooked it up to test (with only necessary hardware) and it worked fine. So I added hardware piece by piece and everything seemed dandy.
My system worked for about another 2-3 weeks, but then again it just died 2 or 3 days ago with the exact same problem. The system will not power on at all. I have tried the same troubleshooting I did previously but this time nothing works. It will not power on at all, though the green motherboard LED power light is on.
Now, I'm starting to wonder if the power in the house is causing some kind of issue so I bought a digital multimeter to test the outlet. I found it giving 118.3 to 121.5 volts in the ~30 minutes I monitored it for, so I thought that sounded fine. I also confirmed the grounding was wired properly. I also checked my surge protector and it says it is still protecting so I know that hasn't been fried, and it also has a light showing that Ground is proper.
So then I started looking into solutions for any power issues. Like a UPS with automatic voltage regulation, or a power line conditioner which also regulates voltage. But then I thought well, does it really even matter because the power supply should be doing that anyway, shouldn't it? Afterall it's converting AC to DC anyway. So I looked up the specs of my power supply and noticed a few things.
"Over-voltage and over-current protection, under-voltage protection, and short circuit protection provide maximum safety to your critical system components"
as well as it having Active Power Factor Correction
"Active Power Factor Correction also markedly diminishes total harmonics, automatically corrects for AC input voltage, and is capable of a full range of input voltage."
So based on these, even if there is some fluctuation in the input AC voltage, the PSU should be capable of correcting for this, unless there is an issue with it.
I have already submitted an RMA request with Corsair for the PSU as it has a 7 year warranty and I only bought it 2 years ago, because I can't think of any other reason for this to happen other than bad power coming from my PSU.
But I am looking for some more opinions on power, power supplies, and for possible causes of my motherboard dying out on me, TWICE. I know the house has questionable power sometimes because I do see the lights dimming out and stuff quite often, but the power supply should be able to handle this.
I monitor the temps of my system regularly and there was no overheating that I am aware of, unless it was in the PSU itself which I am not able to monitor.
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