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#1
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Random Reboots ?
I recently built a new PC around a Koolance water-cooled case.
For a over a month now it has been running fine, however now all of a sudden it has started to reboot at random for no apparent reason, I can be using it for 4 hours and it will restart or it could be 10 minutes. Here is the spec of PC: Intel P4 3.4 ASUS P5AD2 Premium ASUS X800 PCIe PC Power and Cooling Turbo Cool 510 1 x 1 gig stick of crucial PC 4200 DDR2 RAM 2 36gig raptors drive configured on Intel RAID 0 XP Pro As I mentioned before the system is water cooled, that includes the CPU, graphics chip and hdd. At first I though the culprit was something overheating was causing the system reboot, however the system does always reboot under heavy loads, just before it rebooted yesterday the CPU was at 28c and the motherboard was at 45c. Last night however I though I had cracked it as I removing an external hdd I recently added. The reason for this is that this hdd required an external power supply and at the moment I have one wall socket with a six way extension bar coming out of it all of which I utilised by various computer products. My reasoning behind this was perhaps the demand for power was out stripping supply. I then left it on over night but alas it still rebooted. The only other problem I've been getting it is that if the USB card reader is plugged in the system will sometimes not boot fully, not sure if this is related or not. I'm really looking for any tests that I can do which will prove that a component is faulty, as stripping this system down when it's full of water is no easy task. Oh yes, all overclocking has been removed, the system is running as 'standard' |
#2
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have you tried replacing the power supply? That could be the culprit.
"andyw" wrote in message ups.com... I recently built a new PC around a Koolance water-cooled case. For a over a month now it has been running fine, however now all of a sudden it has started to reboot at random for no apparent reason, I can be using it for 4 hours and it will restart or it could be 10 minutes. Here is the spec of PC: Intel P4 3.4 ASUS P5AD2 Premium ASUS X800 PCIe PC Power and Cooling Turbo Cool 510 1 x 1 gig stick of crucial PC 4200 DDR2 RAM 2 36gig raptors drive configured on Intel RAID 0 XP Pro As I mentioned before the system is water cooled, that includes the CPU, graphics chip and hdd. At first I though the culprit was something overheating was causing the system reboot, however the system does always reboot under heavy loads, just before it rebooted yesterday the CPU was at 28c and the motherboard was at 45c. Last night however I though I had cracked it as I removing an external hdd I recently added. The reason for this is that this hdd required an external power supply and at the moment I have one wall socket with a six way extension bar coming out of it all of which I utilised by various computer products. My reasoning behind this was perhaps the demand for power was out stripping supply. I then left it on over night but alas it still rebooted. The only other problem I've been getting it is that if the USB card reader is plugged in the system will sometimes not boot fully, not sure if this is related or not. I'm really looking for any tests that I can do which will prove that a component is faulty, as stripping this system down when it's full of water is no easy task. Oh yes, all overclocking has been removed, the system is running as 'standard' |
#3
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Not really, I purposley spent about 4 times more than the average price of a PSU to avoid that actual problem. I'm abit worried that 45c is too hot for the motherboard ? |
#4
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Yes, 45c is to Hot.
Is you Northbridge under an fan-cooler or is it watercooled? Perhaps the Northbridge gets to hot... If u are sure your Northbridge-Cooler is ok, i think it can be the power-Supply... Joerg "andyw" schrieb im Newsbeitrag oups.com... Not really, I purposley spent about 4 times more than the average price of a PSU to avoid that actual problem. I'm abit worried that 45c is too hot for the motherboard ? |
#5
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Northbridge ?? Not quite sure what you mean, if your referring to the mother chip than that has no cooling, except what was already on the motherboard ? |
#6
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Your Mainboard have a North and a Southbridge.
Sometimes the Northbridge-Chip is activ cooled (with fan). Sometimes there is only a passiv-Cooler. "andyw" schrieb im Newsbeitrag ps.com... Northbridge ?? Not quite sure what you mean, if your referring to the mother chip than that has no cooling, except what was already on the motherboard ? |
#7
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In article om, "andyw"
wrote: Northbridge ?? Not quite sure what you mean, if your referring to the mother chip than that has no cooling, except what was already on the motherboard ? The first thing you should do, is set up windows to "blue screen", rather than automatically reboot (I don't have WinXP, but possibly in Control Panels, System, Advanced tab, Startup and Recovery). That way, you'll get a bunch of numbers, but also perhaps the name of the software module where the crash is occurring. If the error is in the same module each time, then the name of the module should give a good idea of what hardware or driver code is responsible for the crash. If the module is random, that points more at a hardware error, like bad RAM/motherboard/CPU. Your CPU and motherboard temperatures appear to be reversed, as it is unlikely the CPU is at 28C and the motherboard at 45C. You might try uninstalling all hardware monitor programs. If you've got Asus Probe and MBM5 loaded, they access the SMBus and both programs shouldn't be installed at the same time. Uninstall both and see if the computer is more stable. If the CPU is at 45C, then that means the water cooler is working. You won't find many people with air cooled 3.4GHz processors at that temperature at full load. The standard tests I recommend are memtest86 (memtest.org) and Prime95 (mersenne.org). Memtest86 is the first test to run, and it tests all the memory. Prime95 tests memory, CPU, and Northbridge, and it sometimes uncovers problems that don't show up with memtest86 (i.e. the memory can be bad and still pass memtest86). By doing these two tests, you'll know whether the computing core is solid or not. For 3D testing, you can use your favorite game as a test, or I use 3DMark as a stability test (loop the demo mode for an extended test). It will do a good job of warming up the hardware and moving a lot of data around. If the machine won't spontaneously reboot when doing Prime95, but does reboot when running a 3D game, then it could be a hardware problem with the graphics card or a software problem with the graphics card driver. Also, a question for you. Why only one stick of RAM, on a dual channel machine ? Are you buying a matching one soon to go with it ? If you only want 1GB ram, then 2 x 512MB sticks would be the way to go, if you plan on overclocking. Dual channel gives you more memory bandwidth. HTH, Paul |
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