This could be a power related, XPS can consume a lot voltage, I notice you have paid in Euros and I´m assuming the voltage on your location could be 220v have you plug your pc on outlet with a ground setup??? Is there many hardwares plug in and on?? Try moving your pc to another location on your house and see if this will happen also try with diferent surge protection.

 

Try run some programs like Sisoft SANDRA and Nvidia Ntune and make some strees test for each componet on your system.

 

Dell XPS 720 Red

Intel Exteme QX6850 @ 3.3

Corsair Dominator DDR2 @ 1066

GeForce 8800 Ultra SLi

X-Fi Gamer

300Gb Raid 0

1Tb Raid 0

40" Sony Bravia @ 1920x1080

 

 

 

 

 

 

adolique ,

 

I notice that you mention you have 4 GB's of Memory installed. Is your memory running @ 1066 mhz? Does it happen to be in SLI/EPP mode?  I have noticed that for some reason I get blue screens when my memory is in SLI mode @1066Mhz. Why don't you try disabling EPP/SLI in the performance tab of the bios for memory. I don't know why but a lot of people get blue screens with that enabled yet others don't have a single issue.

 

I know exactly what you are talking about getting blue screens when you are not doing anything its just random. Or even when I am playing games and stuff like that. It bugs me because all the blue screens aren't always the same they give you [IRQL not less or equal] [ page fault in a non paged area] etc..... all sorts of weird stuff. Yet it only pertains to one thing.

 

Let me know if this helps.

~Sunny~

Mine just shuts it self down and reboots for not reason other than something is hot and unstable. I only got a blue screen when I tried to run my machine at bin 3.

Hi,

 

Thank you all very much for your help.

As for the plugs I have, they are indeed 220V and I checked: there's a set of 5 on a single 16A (Ampere) fuse. They were set up by a professionnal electrician. My PC share this group of plugs with a phone, a printer (most of the time off), a scanner (off too), a 5.1 home cinema set (half of the time on). And that must be all.

Do you believe that this could be the issue?

 

So that you know, Dell support recommended yesterday that I run some test from a CD that was delivered with a PC. I launched it yesterday evening and it's still running (checking the hard drive should take 45 hrs at the current speed !!!). It is running from a bootable CD that starts Windows 98!

Anyway it has'nt stopped yet. It would probably reboot if it's power related.

 

The H2C cooling system seems to be effective. I can feel sometimes rather hot air coming out. It is rather quiet (for the moment - my previous Dell computer was quiet in winter as well, but horribly loud during summer).

 

Yet again I am not sure I have BSOD issues. I don't have any blue screen with errors. Just while in the middle of something, it reboots and I go straight from Vista to the BIOS.

 

Thanks again.

 

Cheers,

 

Alexandre.

I forgot to mention: I have not yet changed any of the parameters in the BIOS. My PC is as delivered (out of the factory) by Dell, that is, a QX6850 overclocked to 3,46 GHz and 4 memory @800MHz.

 

Fortunately, I have my old PC and a laptop. But I don't see using these two instead of my brand new 5k€ PC as an option!! ;-(

 

Alexandre.

Hi,

 

Dell support had me run some tests with a CD that boots on Windows 98.

The tests lasted for about 17hrs and the PC did not crash / reboot at all during that time.

 

They then asked me to let it run under the BIOS settings and check after a couple of hours if it had crashed. It hadn't.

 

Looking at the tests results (all tests passed) and the fact that the PC is not crashing in BIOS led them to think that the problem is not hardware related but rather is an instability within the system.

They want me to reinstall it from scratch (after having formated my HD).

 

What do you think?

 

Thank you for your help.

 

Alexandre.

 

what is running under the bios settings?  Don't recall hearing that before.

 

If you have nothing to worry about as far as extras on the system a reinstall might be the way to go..i personally hate having to do that and will do all i can to avoid it unless its the only option left..

 

 

"As for the plugs I have, they are indeed 220V and I checked: there's a set of 5 on a single 16A (Ampere) fuse. They were set up by a professionnal electrician. My PC share this group of plugs with a phone, a printer (most of the time off), a scanner (off too), a 5.1 home cinema set (half of the time on). And that must be all.

Do you believe that this could be the issue?"

Well if you say that a professional electrician have set for you then there is no problem, and I will assume he uses the best wiring spec. to be use with your fuse.

 

If your system is running ok until now and does not reboot yet your computer is fine, you should try reinstall the OS.

 

Tip: Now if you gonna reinstall windows vista and have some blue screen try install at least with 2Gb RAM by removing some memory modules and after installation apply this patch http://support.microsoft.com/kb/929777/en-us

 

 

I finally formatted the HD and reinstalled Vista as asked by Dell support.

Still the problem occurs again!!!

I have only installed genuine software from known / established vendors (Adobe, Kaspersky, Nero) and had the problem of my computer randomly rebooting before I even installed any drivers (apart from that of chipset and GPU).

Any idea?

Thank you again very much.

Alexandre.

Try set to Standard your memory settings on BIOS intead of EPP/SLI.

 

See if still gonna rebooting.