Confused with this ONE: I'm running a Asus AN8-SLI board, a 3800 64FX cpu, and a single Nividia 6800GT SLI video CARD, 2GB Geil ram, and 2 Seagate Barracuda 120 GB SATA stripe HD's. Every thing has worked fine for about about six months, now starts up, PC goes through post showing no errors and healthy stripe but after post done doesn't boot, just displays greyish screen.
Have tried switching SATA striped HD's, Video cards, as well as Ram, as well trying all in another PC BUILD, even going to the extent of installing an OS on other PC which all worked fine with no problem, even using existing monitor, leaving but CPU/motherboard to consider. Have looked through Bios finding no errors with my limited knowledge, was able to install Windows XP going through whole set-up with it being displayed fully normally with no problems, but then after install is finished it boots to blank display after going through post, have even limited booting to only HD in Bios to funnel it, with no change, as well as trying Safe Mode booting.
Can't figure out how or why it ALLOWS me to go through all the steps of set-up then nothing! screen is just blank!
Would be thankful for any input and help on this one Thanks

What do you mean by "greyish screen"? Is there any text displayed at all?

Try booting to Safe Mode to see if that makes a difference. If it does, it may be a driver problem, a video card problem, or a monitor problem.

To boot to Safe Mode, keep pressing and releasing the F8 KEY about once or twice every second when you start the computer until you see the Windows startup menu, use the down arrow key to hightlight Safe Mode and then press the Enter key.Should relabel that screen from being greyish, to just showing its on :-/ didn't have my first cup of java yet, corrected it, had already tried Safe Mode.
Goes through entire post GUI with no problem, have already tried save mode booting but right after POST is done, all I get is a blank screen no text, display, or error, just blank :-?I have read all the swaps you made & the 1st thing that comes to mind is trying it with a different monitor. (crt) Thanks for suggestion, but while switching monitor wasn't the first thing I tried, did try it with no change, goes through POST showing GUI, even Boot graphic, then nothing, running video card along with sticks of ram from that PC now, in my Lan gaming PC now, with same monitor to post the reply.
Have even tried installing different OS's Windows 2000 and a Linux with no change :-? .
Don't have another 939 pin CPU, as I use mostly 754's because they're a bit faster than 939 pins and into gaming, to try and swap CPU to see if thats the problem.
Can't figure out why while it allows me to go through a GUI interface of the complete set-up fine, even when during set-up its required to re-start, it works great, but when install is done, I get nothing
[highlight]Much Thanks [/highlight]for your suggestion, would be thankful if you think of my trying anything else, Thanks In the Windows startup menu, try Last Known Good Configuration instead of Safe Mode.

Do you hear any beeps? If so, how many?

Have you tried pressing the key indicated when the computer starts to enter the BIOS setup, choosing the default settings in the BIOS setup, and then saving the settings?



[highlight]Thanks[/highlight] for your input again, but only thing I can bring up is the GUI of bios start-up, Bios and my SATA stripe info (F10).
I can get into Bios with no problem and have already tried default settings, taking account for SATA stripe, I get nothing when I try to go into safe mode, with no menu just blank screen after Bios is done.
As far as start-up error beeps hear only the first normal single beep.
Have also checked power supply as in past I've tracked some weird problems ito power issues (not with this PC) but everything is right on point, also just for the point in trying hooked up an ATA HD with same end results as the SATA stripe did.
Can't figure out why it would allow me to go through complete set-ups of three different OS's to finish working fine, then after set-up is finished go blank :-?
Thanks again, would welcome any other suggestions or idea's It is just a suggestion and nothing more but it may be the key to your problem ! A friend of mine soon had a problem very similar to your own!!!! When he started the PC => NO PROBLEMS , NO BEEPS or anything to show that there is something wrong !!! BUT
that was all !! The OS did not started !!! Sometimes there was BLACK SCREEN , sometimes text , sometimes it was even traing
to load window XP OS but THAT WAS ALL ! We traied everything just like you , we even disconnected the two banks of RAM to see
if the MB is working properly ( if there is BEEPS indicating that RAM is missing and there were BEEPS ) !!! BUT after all it was
the MB which was defective !!!!!!!!!!!!!!!!!!!!!! We changed it with a new one and he is FULLY functional again !!!

I DO NOT WANT TO DISAPPOINT YOU but may be it is a new MB that you need !!! I VERY MUCH hope I am wrong and it is something else smaller and cheaper !!!!!


PLEASE EXCUSE MY BAD ENGLISH !!!!!!!!!!!8-) Thank You, for your input on MB found and used my MB PCI card tester early this morning, everything checked out, but as the PCI card tester isn't the highest tech found, there still might be a problem with MB.
Have switched most parts monitor,video card, ram, everything but the processor and MB, as I've run with mainly the 754 pin vs. 939, so this is the only 939 FX64 processor I have.
I wrote to Asus Support and hoping for help from them, if this is a MB problem, I shall post their response if that is if they have an answer in case someone else might have the same problem, would still more than welcome any suggestions or input still on the probem, thanks all.
And by the way gogsi there's nothing wrong with your English Thanks for your time and effort in trying to helpMr. R:

Try disconnecting all hardware but the motherboard, power supply, hard drive, video card, keyboard and mouse. In addition, use the on-board video if your motherboard has one, and remove the video card. Try to get the system down to the bare essentials needed to boot to Windows.

If you are able to boot to Windows after doing this, then one of the other devices may be the cause, or your power supply may not have enough output to supply the needs of all the devices that are connected.

Doc