XPS 710/ 720 upgrade not loading after installing new QX6850

Question

Okay, so a while ago I upgraded my XPS710 to the XPS 720 motherboard. Just today, I received a new QX6850 CPU that I got relatively cheaply.... The issue, well I have cleaned off the heatsink and CPU die. Applied some arctic silver to the die and re-assembled the computer. It boots and I can get into the BIOS, it is recognising the QX6850 and registering at correct FSB and clock speeds (yes, had previously updated to BIOS A03). However, it will not boot to windows, it will instead reboot during process or give me a BSOD STOP screen [STOP: 0x0000007E (0xFFFFFFFFC0000005, 0xFFFFF8000985E251, 0xFFFFF98001ADA508, 0xFFFFF98001AD9EE0)]. For the record I previously had installed the E6600, and am running Vista Home Premium 64-bit. Any suggestions? Stu Message Edited by sakor1 on 12-31-2007 02:46 PM

Toronto699 · Answer

hmm maybe try Bios A04

sakor1 · Answer

Hrrmm, OK will try removing some RAM next.

Also note that at bottom of BSOD I get is following: ecache.sys - Address FFFFF98000B297E9 base at FFFFF98000B1B000 Datestamp 4549bcfb

Should not be driver incompatibility, been running 64bit for ages now... only change I have made is just installing this CPU.

Thanks

Message Edited by sakor1 on 12-31-2007 03:46 PM

sakor1 · Answer

Nope, no luck. Thanks though!

Now have A04... Also uninstalled E6600 cores in the hardware manager before shutting down and putting the QX6850 in.

It either gets to the windows loading screen and hangs... or resets. Sometimes the BSOD. Same deal if I insert the Vista CD and load from that.

Any other suggestions?

Stu

Toronto699 · Answer

Remove 2 gigs of ram and see if it will boot into windows? u have a hardware compatibility issue somewhere..are all your drivers up to date for 64bit os

Message Edited by Toronto699 on 12-30-2007 10:42 PM

sakor1 · Answer

Yeah, one of the first things I thought of....

Unfortunately, I do that, and it finishes the white bar which is loading windows system files... then either resets or hangs, it goes no further :(

There's no way this could be a power supply problem right? I know the qx6850 requires more power, but pretty sure the 750watt supply with the XPS could handle it...

Stu

sakor1 · Answer

Well, that didn't work either.

Removed 2gig and tried... gets to windows loading screen and resets. On the reset I again try to start windows normally and it freezes on the loading screen. In other words, same problem no fix.

This is starting to freak me a little, paid a bit for this CPU and it is supposed to work with the XPS 720!

Thanks for help so far, it is appreciated. Any other remedies?

Stu

sakor1 · Answer

Unfortunately safe mode is a no-go as well, have tried it and it runs through the black screen with all the files/ processes scrolling down in white text... and finishes scrolling, but seems like it is frozen, won't go any further!

Also just tried uninstalling all my RAM, and re-installing the original XPS 710 non-ECC RAM that came with it to no avail...

Thanks everyone for trying to help so far! I really don't want to give up, but may only have a very small return window (if any) on the CPU so am a bit desperate! Anything else you can think of to try?

Stu

Toronto699 · Answer

one last thing.. can u try a system repair with your vista DVD?

Toronto699 · Answer

i doubt its a power problem..

Toronto699 · Answer

sakor can u boot to safe mode? u could try this , but if it will not boot to windows refollow the steps to put automatic restart back the way it was.

go to control panel , system and maintenance , click system , click advanced system settings , look for start up and recovery click settings button ,locate and uncheck "automatically restart , click ok in the start up and recovery window , click ok on system properties , close system window .

remember from now on when a problem causes a BSOD or other problem u will have to manually reboot windows.

see if it will boot to windows.

Message Edited by Toronto699 on 12-30-2007 11:44 PM

CoMeader · Answer

Sakor,

Don't give up. I've been running the QX6850 on my 720 motherboard (upgraded form XPS700) ever since I got the new board, so it can be done.

I had some issues witht eh setup but they were related to having 4GB of memory in the system and having to disable some of the spread spectrum settings. These have been fixed with the A04 BIOS along with some major system instability with running my Corsair memory using the EPP profile.

sakor1 wrote:
Well, that didn't work either.

Removed 2gig and tried... gets to windows loading screen and resets. On the reset I again try to start windows normally and it freezes on the loading screen. In other words, same problem no fix.

This is starting to freak me a little, paid a bit for this CPU and it is supposed to work with the XPS 720!

Thanks for help so far, it is appreciated. Any other remedies?

Stu

sakor1 · Answer

Well, I'm at my wits end. Don't get it, BIOS, etc recognises and it seems to be running, but Windows wants NOTHING to do with it, just resets or freezes. Can't even get the DVD to work and do a repair/ re-install.   At the moment I have the E6600 back in and am about to leave for NYE party (its 7pm here)... but I would really appreciate if there are any more ideas/ suggestions/ etc that people have they please post, because I'll be straight back into troubleshooting tomorrow morn.   Thank-you so much to those that have helped so far, you all have a great new year!   Cheers, Stu

gdwrnch3 · Answer

Try this, Power your system down, unplug it, hold your power button in for 20 seconds, remove the side cover and clear your cmos. Touch your power supply, or a metal part inside your machine to remove any static in your body, also, I never do anything like this on a carpeted surface(too much static) On your motherboard, looking from the side, in the lower lefthand corner, just above the battery, there are two jumpers #20 and #22 in the diagram. Remove the tiny little jumper from the password pin #22, and place it on the RTC jumper pin #20 for a few seconds, then remove it from pin #20, and put it back on pin #22.   Also make sure nothing is overclocked  in ntune(especially the fsb), all of the spread spectrum settings are dis-abled, and your memory is set to standard and not SLI/EPP. See if this corrects your issues. You will also probably need to open device manager, and delete the old processor cores and restart. Please let us know how you make out. Happy New Year

sakor1 · Answer

Thanks gdwrnch3, have tried resetting CMOS just now, does not help. Still resetting upon trying to boot windows... Stu

gdwrnch3 · Answer

Open Ntune, and go to 'dynamic bios' and make sure your 'spread spectrum' settings are disabled, and your 'HT Link Frequency' is set to 1000MHz.

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