• CPU Murdered by Power Supply?
    16 replies, posted
Hey tech folks. I have been trying to fix up a build for quite some time. The build is as follows i5 2500k Sabertooth P67 Sapphire 6850 8 gb of Corsair Memory (4 sticks 1600) 1 Seagate TB hard drive DVD Burner OCZ 650 W Psu So, as I was assembling it I flicked on the switch and powered it on. I got into bios - but then the CPU fan started to make this awful screeching noise. Turned off the PC. Rebooted. A red LED on the board indicated that there was a processor issue. Now some background. I've RMA'd processor after processor with Intel as well as the motherboard with Asus for about 3 months now. The only thing I have yet to RMA is the power supply. Is it possible that the power supply could only affect just the processor and nothing else? My tech skills: Using a microwave < FP's tech skills: Something I could never fathom. Thanks for the help guys! [B]Update[/B]: Fixed the motherboard and we're all good. RMA'd with Asus. Now for another problem. I get these random reboots without a blue screen. I tested the memory and we're fine. It runs I think 8-8-8. I took out a stick because it didn't pass memtest and did cause BSODs. It just happens out of the blue (no pun intended). I can run a game and it never happens. Ideas?
Does it work after leaving it alone for 10 or so minutes?
It never shows anything on screen after left on for 10minutes. Just tried. Nothing.
Did you use motherboard standoffs?
Yes. They're all secure and snug. Nothing is too tight or too loose.
If the PSU is putting out too much voltage, it could cause your problem. I have not seen this before, but there is a first for everything. If you go down the to Dalco in Springboro, you can get a tester. The cheap one is only going to have LED's, but the $40 ones actually have read outs that you can see the voltage levels. These are better than hooking up a meter to your power supply as they put a proper load on it to that it does not blow up. [url]http://www.dalco.com/c-900-power-supply-testers.aspx[/url]
[QUOTE=tina the baker;36588909]These are better than hooking up a meter to your power supply as they put a proper load on it to that it does not blow up.[/QUOTE] Since when does using a volt meter on a PSU cause it to explode? PSUs are designed to be able to run without a load.
Not really. They are switching power supplies and you really should not run them without a load. You also can not get a proper read on the voltages if you do not have a load on them. A characteristic of the switchmode design, for instance, is that it needs a load on all of its rails at all times. Modern PSUs don't need much load, and they get a bit of 12V rail load from their cooling fan(s), and they have internal resistors that lightly load the rails even when there's nothing plugged in. Older PSUs - well before the days of ATX - would notice if you were trying to run them unloaded, and shut themselves down. Oh, and I did not say explode, I said blow up as in short out and no longer work.
Fixed the motherboard and we're all good. RMA'd with Asus. Now for another problem. I get these random reboots without a blue screen. I tested the memory and we're fine. It runs I think 8-8-8. I took out a stick because it didn't pass memtest and did cause BSODs. It just happens out of the blue (no pun intended). I can run a game and it never happens. Ideas?
[QUOTE=blacksam;37184216]Fixed the motherboard and we're all good. RMA'd with Asus. Now for another problem. I get these random reboots without a blue screen. I tested the memory and we're fine. It runs I think 8-8-8. I took out a stick because it didn't pass memtest and did cause BSODs. It just happens out of the blue (no pun intended). I can run a game and it never happens. Ideas?[/QUOTE] Try updating the BIOS. I had a motherboard that had two BIOS EEPROMs (one primary and one backup in case the primary got corrupted.) Somehow the second BIOS became corrupt and the machine would randomly reboot and go into an infinite reboot cycle. It took me two RMAs to figure that out. [QUOTE=tina the baker;36603677]Not really. They are switching power supplies and you really should not run them without a load. You also can not get a proper read on the voltages if you do not have a load on them. A characteristic of the switchmode design, for instance, is that it needs a load on all of its rails at all times. Modern PSUs don't need much load, and they get a bit of 12V rail load from their cooling fan(s), and they have internal resistors that lightly load the rails even when there's nothing plugged in.[/QUOTE] Computer switching power supplies are [I]designed[/I] to be able to run without a load. A feedback loop attached to the MOSFETs dynamically reconfigures the power output based on load. If there is no load, the MOSFETs are choked down to only a few milliwatts, which bleeder resistors then burn off. In practice, this never happens because the internal PSU fans pull at least 6-10W [QUOTE=tina the baker;36603677]Older PSUs - well before the days of ATX - would notice if you were trying to run them unloaded, and shut themselves down.[/QUOTE] Yeah, no. AT power supplies extended a 120/240v on/off toggle switch via 4 wires to the front of the case, they weren't smart enough to know they weren't loaded or even if they were shorted. They were still switching power supplies and could be ran load-less. [QUOTE=tina the baker;36603677]Oh, and I did not say explode, I said blow up as in short out and no longer work.[/QUOTE] Then according to you, the second you power on a motherboard, the PSU should short out and never work again, considering most motherboards have internal voltage detection circuits that work in the same manner as a volt meter.
Is your RAM set on the correct frequency? Did you do a memtest86 for at least a couple of hours on each memory stick?
[QUOTE=Drumdevil;37204467]Is your RAM set on the correct frequency? Did you do a memtest86 for at least a couple of hours on each memory stick?[/QUOTE] [QUOTE] Type DDR3 Size 6144 MBytes Channels # Dual DRAM Frequency 802.7 MHz CAS# Latency (CL) 8 clocks RAS# to CAS# Delay (tRCD) 8 clocks RAS# Precharge (tRP) 8 clocks Cycle Time (tRAS) 24 clocks Command Rate (CR) 2T Physical Memory Memory Usage 24 % Total Physical 5.98 GB Available Physical 550 MB Total Virtual 8.00 TB Available Virtual 3.85 GB SPD Number Of SPD Modules 3 Slot #1 Type DDR3 Size 2048 MBytes Manufacturer Corsair Max Bandwidth PC3-10700H (667 MHz) Part Number CMZ4GX3M2A1600C8 SPD Ext. EPP XMP--2 Frequency JEDEC #3 Frequency 666.7 MHz CAS# Latency 9.0 RAS# To CAS# 9 RAS# Precharge 9 tRAS 24 tRC 34 Voltage 1.500 V JEDEC #2 Frequency 592.6 MHz CAS# Latency 8.0 RAS# To CAS# 8 RAS# Precharge 8 tRAS 22 tRC 30 Voltage 1.500 V JEDEC #1 Frequency 444.4 MHz CAS# Latency 6.0 RAS# To CAS# 6 RAS# Precharge 6 tRAS 16 tRC 23 Voltage 1.500 V Slot #2 Type DDR3 Size 2048 MBytes Manufacturer Corsair Max Bandwidth PC3-10700H (667 MHz) Part Number CMZ4GX3M2A1600C8 SPD Ext. EPP XMP--2 Frequency JEDEC #3 Frequency 666.7 MHz CAS# Latency 9.0 RAS# To CAS# 9 RAS# Precharge 9 tRAS 24 tRC 34 Voltage 1.500 V JEDEC #2 Frequency 592.6 MHz CAS# Latency 8.0 RAS# To CAS# 8 RAS# Precharge 8 tRAS 22 tRC 30 Voltage 1.500 V JEDEC #1 Frequency 444.4 MHz CAS# Latency 6.0 RAS# To CAS# 6 RAS# Precharge 6 tRAS 16 tRC 23 Voltage 1.500 V Slot #3 Type DDR3 Size 2048 MBytes Manufacturer Corsair Max Bandwidth PC3-10700H (667 MHz) Part Number CMZ4GX3M2A1600C8 SPD Ext. EPP XMP--2 Frequency JEDEC #3 Frequency 666.7 MHz CAS# Latency 9.0 RAS# To CAS# 9 RAS# Precharge 9 tRAS 24 tRC 34 Voltage 1.500 V JEDEC #2 Frequency 592.6 MHz CAS# Latency 8.0 RAS# To CAS# 8 RAS# Precharge 8 tRAS 22 tRC 30 Voltage 1.500 V JEDEC #1 Frequency 444.4 MHz CAS# Latency 6.0 RAS# To CAS# 6 RAS# Precharge 6 tRAS 16 tRC 23 Voltage 1.500 V[/QUOTE] How does it look? Also updating the BIOS This is going to sound incredibly stupid, how does one go about updating the bios? I tried installing the helpful asus EZtool or whatever it is called, and it says it won't recognize my motherboard. I call shenanigans. [IMG]http://niggaupload.com/images/XCwqE.jpg [/IMG] This is what it would do as I described before. [IMG]http://niggaupload.com/images/89Ct1.jpg [/IMG] Installed a windows update and got this message ^^ [IMG]http://niggaupload.com/images/GMKz.jpg [/IMG] Random crash?
Succesfully updated the bios. Here's what speccy says. [IMG]http://niggaupload.com/images/qk1D.png[/IMG] I can't remember how I changed the fan RPM to 1000. When I did the bios update it changed my settings. Ideas? And another random reboot just occurred a minute ago. What should I test?
When it reboots randomly, it should still generate a dump. Go use [URL="https://dl.dropbox.com/u/32264365/bluescreenview.zip"]BlueScreenView[/URL] or something like that and see what it says.
Yeah, I'm still not getting a minidump with BlueScreenView.
[QUOTE=blacksam;37230293]Yeah, I'm still not getting a minidump with BlueScreenView.[/QUOTE] Is your pc set to create mini dumps?
[QUOTE=ExplosiveCheese;37231873]Is your pc set to create mini dumps?[/QUOTE] Yeah, I have it set up. Still baffles me. I even set it to small memory dump
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