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Random Stall/Reboot

By m4psycho ·
Hi,
Recently just built a computer with the ASUS P5NSLi board and the following components:

OCZ 2x1gb DDR@ RAM, running at 700MHZ (2.1 V)
Intel 6300 @ 2.4GHz
Stock HSF
eVGA GeForce 7900 GS KO
500W Enermax Liberty PSU

I realize the board is rated for DDR 667 but I'm pretty certain the "o/c" to 700 isn't the problem. At random times after the computer is shut down and started up again, the computer won't even post and there will be a blank screen, and when I manually turn off the power and boot it up again it loads windows and everything works. Sometimes it'll post (with the beep) but then it'll just restart when it loads up windows and after it restarts it'll work fine. Othertimes it'll go into some messed up "safe-mode" version of windows, and when you manually restart it works fine again. This doesn't always happen but is frequent enough when I start up the comp that it's quite annoying...The computer is rock stable while started up i.e. playing games etc.....

Any thoughts? thanks.

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All Answers

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Sounds as if there is something breaking down

by HAL 9000 Moderator In reply to Random Stall/Reboot

The obvious thing would be to reset everything to Standard and see if the problem persists.

If it doesn't then something that you have overclocked is causing the problem and you'll need to change one thing at a time to see if it works properly.

I would also suggest grabbing a Live Linux and running off that to see if the problem persists as it's possible that you have a software problem that is occurring at random intervals and causing the problem.

Also it would be interesting to know what the actual Beeps are as these are an Error Message to the operator and depending on the sequence that they sound they will tell you what is going wrong. There should be a listing of the Beep Error Codes in the M'Board Manual and that will save you a lot of time searching around.

Col

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Been there....

by m4psycho In reply to Sounds as if there is som ...

I don't think it's a software problem at all because it's occuring even before it hits the harddrive...

The only thing that's overclocked is the ram, and the ram is rated DDR2 800, so if anything is holding it back it's the motherboard. I've even got the voltage set at 2.1V over the default 1.9V, and 0.2V is quite a bit considering it's only a 33MHz "overclock".

The Beep is the standard post beep, you hear the single beep if everything is okay, and currently the only thing that's happening is either it beeps or it doesn't.

Thanks!

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Well it could be the M'Board

by HAL 9000 Moderator In reply to Been there....

As it is a NVidia Chip Set Board it's possible that the M'Board Chip Set isn't working properly and could sometimes be failing to recognise the RAM which should cause the POST problem or lack there of.

You might like to try The Ultimate Boot CD and do some diagnostics of the M'Board, RAM and the like it's available for download from here:-

http://tinyurl.com/3jnpy

I have a copy of this and a couple of Live Linux's in my took kit as Must Have tools. They both have saved me hours of work in the past and are not something that I'm even considering walking out the door without.

The Ultimate Boot CD is a set of Diagnostic Tools that should pin Point your problem.

If you want to just grab a copy of a Live Linux there are quite a few available from here but my pick of the bunch would be Knoppix as it allows you to reset Windows Passwords if needed.

http://tinyurl.com/23nmq


If you don't want to download the entire thing you can buy a CD for very little including postage.

Col

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Been there....

by m4psycho In reply to Sounds as if there is som ...

I don't think it's a software problem at all because it's occuring even before it hits the harddrive...

The only thing that's overclocked is the ram, and the ram is rated DDR2 800, so if anything is holding it back it's the motherboard. I've even got the voltage set at 2.1V over the default 1.9V, and 0.2V is quite a bit considering it's only a 33MHz "overclock".

The Beep is the standard post beep, you hear the single beep if everything is okay, and currently the only thing that's happening is either it beeps or it doesn't.

Thanks!

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Have you tried Flashing the BIOS

by HAL 9000 Moderator In reply to Been there....

To the latest one available?

That may cure your problem.

Col

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I am having the same issue with the same board

by edroussy In reply to Random Stall/Reboot

I have run into the same problem, and I think it may have to do with the board's firmware. I don't know if you are using 800 MHZ RAM or not, but I am , and I find that I have to reboot to get past the black screen. I think that may have something to do with it. Who knows, all we can do is wait for the next firmware update, or maybe try to RMA the board for a possible defect.

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I think I have the same issue...

by mji20 In reply to I am having the same issu ...

I just installed my board and sometimes when I do a restart from windows, it will not restart. I can't recall if these were manual restarts or if they were due to software install. I have been installing software, so they required a restart... but I noticed that this happened on more than one or two occasions. My machine was getting power, all the lights were on, yet I could not see anything on the screen. I had to use the reset button, or power off the machine to start over.

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DDR2 voltage

by bcpgm In reply to I think I have the same i ...

There seems more compatibility issue between a MB and DDR2 than with DDR.
Read the manual very carefully.
Some, a few Intel MBs, specically require a certain voltage, 1.8v, period.

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DDR2

by richard.koskovick In reply to DDR2 voltage

I have the same mobo as well, and also ran into the same issue/s. First of all, double check your ram. Make sure you have a stick of DDR2 dual channel installed in each of the yellow slots if you?ll only be using two modules; i.e. not one yellow, one black. The manual is vague on this. It will still boot if you don't use both yellow, so there?s nothing to indicate there?s a problem except for the sporadic reboots. Turn off quick boot in the BIOS and confirm the ram capacity identified BIOS matches what you have installed.

Still searching for the cure, I flashed the bios to 1104, and had blue screens and spontaneous reboots more frequent, so I flashed it back to 0801. Use 0801 till a more mature BIOS is released. There's a beta bios available, but I chose not to install since the 1104 made things worse.

One thing I read is that DDR2 needs at least 2.2 volts to be stable, and the bios on the PN5SLI only goes to 2.1, so I went ahead and maxed this setting out and the board became much more stable.

It still wasn?t rock solid?so I started thinking PSU. If you have a low-end power supply (the kind of PSU that comes with that under $50 case), this can compound any problems with hardware and software under load, so I upgraded to a Thermaltake ToughPower 700. The board is now rock solid! And although this isn't a great oc'ing board, I'm getting 3.7 out of a Dual Core 3.2MHz 940 which ain't bad. To get there you'll need to bump up the Vcore voltage (this voltage depends on your CPU) but no matter which CPU you're using, bump up the DDR2 to 2.1. Bump up all the peripherals .1v as well.

Now that I have the board stable at 3.7 I'm very impressed. I'm mainly a flight sim junky and run both FS9 and X. In FS9 with MegaScenery installed I can max out every last setting and the video and game play is still ultra smooth. I guess I didn't need SLI after all , but once you figure out the quirks with this mobo I?m sure you?ll be equally impressed. Especially at the price point this board comes in at.

Hope this helps tame your P5NSLI woes.

RDK

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