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PC Restarting....

J

Justintoxicated

[H]F Junkie
Joined
Apr 10, 2002
Messages
14,522
So I have been running this PC for a while now.

It is prime 95 stable for 48 hours.

However for some reason every now and then my computer just reboots itself mostly in games but sometimes just randomly.

I'm thinking it Might be the stock Northbridge cooler on my DFI Expert.

System is Opteron 165 @ 2700 MHZ
CPU is between 29C and 35C depending on ambient temps and load. My Sensor is 1C off so that would make it truely at 30-36C...

This is at 1.425 volts..

my Northbridge however gets up to 50C! I'm thinking the stock cooler just can't hack it... But I was wondering if anyone else has any problems...I was told not to worry about the NB But I can't seem to figure out why I restart every so often. Also Sometimes my CD Rom won't detect CD's inserted into it.

If so what is the best NB Cooler Waterblock that will fit the chinsey space on the DFI Expert? I have a Thermochill PA 120x2, D5, TDX, and LP Video Card block.

Thanks in advance.
 
Is that thign new cause I don't think it was out when I built my rig.

Sweet!

But is this likely my problem? 50C for a NB is really hot from my experience, but things seem to be changing these days and many people are telling me it is ok.

I wonder if this 7/16th Mc Master Clear tubing will make that tight of a bend...
 
50C is ok for the chipset, getting a bit high but still just fine. I think your problem lies with the memory, try lowering the speed on the memory and run a divider. Also loosen the timing on the memory a bit. I bet that solves most of your problems. I have had a system run prime stable just fine, but have random shutdowns, I finally looked at the memory and it was running 2-2-5-2 instead of 2-2-2-5.
 
If the power supply is a hand me down from your older PC, make sure it's appropriate for the new motherboard (has 24 pins native and not 20, if required)and has enough juice to power all your devices, especially the newer video cards. I wouldn't use anything below 500w these days. Also check your environment, to ensure there are no power surges occuring when this happens, some cheaper PSU's are really sensative to that sort of thing.

Lastly, does it just shutoff, or does it flicker a blue screen momentarily and restart. If it justs shuts off completely it's most likely the PSU. If it just restarts go to your Windows control panel and set it to not restart on crashes so you can read what the BSOD is telling you and research what component it is.
 
PSU is a brand new Enermax Liberty Modular.
Memory is 2 GB OCZ PC3200 C2 2,3,2,5 Running with divider at stock timings and speed.

I'm not sure how it is restarting as I have only caught it one time but have noticed it rebooted several other times. Last night it was durring a heated match of BF2, where I was actualy in something close to first place, then the sound stuttered, then I'm back at the startup screen for the bios, no blue screen, and not a complete shutdown.

Video Card is not overclocked either. But the other restarts I was not running much on the PC other than small applications. I would go to work for example and come home to find the computer had restarted itself.

Also the Comp is plugged into a APC 1500 XS.
Just changed windows setting and I will have to wait untill it happens again.
 
Go into Control Panel > Administrative Tools > Event Viewer. That should be able to show you the error messages from the crashes. You can go to Microsoft and look up the bug check codes so you have a better idea what they all mean. Also you can change the settings so that it will stall on the BSOD instead of immediately restarting.

As for other troubleshooting steps. Make sure you have all 4 power connectors on the motherboard plugged in. Try upping the LDT voltage a bit, as well as ram voltage. Try running with one stick of RAM in single channel, then if that doesn't work try the other stick of RAM in single channel. Take a trip over to www.dfi-street.com. They have a guide on their forums somewhere with a whole plethora of "safe settings" to get everything up and running to make sure it isn't a hardware problem.
 
No Errors other than a DHCP error when my Bridge lost connection. Dang Netgear!

Like I said no BSOD just restarted...

Only things I can figure is either NB is too hot or possibly a bios issue (I have no floppy for flashing)

if my NB is at 50C should I look into the NB Block anyways?

Mem and MB should operate at default power etc, in fact I hear my memory does not like extra voltage like other chips.

The reboots are few and far between but it is annoying to come home from out of town and find Everything I was doing close (downloadsd etc) and the computer restarted, as well as how annoying it was last night in BF2 (first time IO actualy caught it in the act of rebooting) Guess I will post over at DFI street.

But should I go ahead and order the NB block?

I don't really have the time to try each stiock individualy again I already went though this on my last MB and spent massive amoutns of time, to find that I had a motherboard problem.... I'd rather fork out for brand new memory and just put 2 new sticks in that waste any more time testing each stick individualy for hours on end, and in the meantime not being able to play games or do other things quickly due to mem limitations.

Honestly if I can't resolve this issue in a decent amount of time I would be better off buying a new PC as I have very little free time right now to fool around. Maybe I will try Asus Next time as Epox and DFi and Abit will all be on my shit list at this point.
 
Turned out to be a back stock of OCZ memory. I was told the memory was not compatable with my old computer, which is why I built the new one. (was not able to boot into windows with one of the sticks but it worked fine with the other) I figured the stick was bad it did not make snese to me, but I was prime 95 stable for 48 hours when I built this new rig so I figured one stick was just a bit better than the other.

Turns out the stick has gotten progressively worse.

so 5 months and 2g's later im back to where I started, only with a screwed up 8rda+ and a new system.
 
at least u figured out the problem.
get some new memory and ur good to go
8)
 
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