missing operating system...

413x

413x

413x

Caporegime
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I turned on my pc today ( in my Sig ) to find the message "missing operating system " displayed after the post screen

I can't seem to get into the BIOS and don't really know what to do next?

I'm sure u guys can help :)
 
Is the OS on a raid0 set as shown in sig? If so, seems possible the raid rom is not starting. Unless you can see it in post.

Possible repair in windows may assist if it is not the raid, what OS?
 
Yes its on raid 0

I'm using win 7 64

I can't get into boot priority or anything atm, ill try windows repair if nothing else works
 
Windows repair may have a problem seeing it unless it has the drivers for the raid device. I think you need a recovery disk from the raid setup to see the drives.

What adaptor device is it?
Can you see it initialising during post?
Have you checked the connections inside, reseated the card, if it is a card?
 
All I see during post is the splash screen, a short delay with a black screen and then the missing os message

The controller is just the onboard one, no raid card installed.. so the os disc should have the drivers? Is that possible?
 
It is possible, the raid chip is an intel one, otherwise you need to boot from the asus support disk to make a floppy raid driver (or a USB flash) which is inserted with the windows OS disk.
I see one of several causes,

The bios has corrupted. The raid array is set up from the bios.
One or more hard disks in the array has failed or is not connected properly.
Windows has corrupted boot files.

Resetting the bios may cause problems recovering the raid unless you know what parameters were set originally. Is there a key like F12 to recover the bios settings?

If you have a backup image, you can recreate the array and reinstall the image.

andy
 
do you have any external hard drive devices plugged in when booting it?
Like a memory stick or an external hard drive etc., try taking all of these out as well as CDs, my computer defaults to boot from a memory stick when you plug one in, just an idea :D
 
It's def not a usb thing I tried that

Ok I'm gonna have a few more attempts to get into BIOS but if this fails what should I try first?

Last resort is to reinstall, I don't have recent image :/ will resting the BIOS loose my current install for sure ?
 
It won't lose the install, it may reset the raid settings as it is in the same ROM as the bios. I cannot be sure from the manual.

If the raid settings are just selecting disks, and stripe size (default?) and raid type (0), it may be recoverable by tinkering. I would not guarantee anything.

Can you tell from taking the side panel off, if all the disks are working, spinning up, fans spinning, power lights etc are all working normally?
 
I really can't seem to get into the BIOS.. everything lights and fans are spinning up, I get one boot beep but I'm not sure if the hdd are spinnung, i can't tell

The next board I get will definitely not be asus i seem to have been having a lot of problems with it lately
 
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If the CMOS has been reset and your using a USB keyboard you may not be able to access the BIOS if the Legacy USB keyboard mode is now set to disabled. Are you using a USB keyboard?
 
al4x said:
I turned on my pc today ( in my Sig ) to find the message "missing operating system " displayed after the post screen

I can't seem to get into the BIOS and don't really know what to do next?

I'm sure u guys can help :)
Click to expand...

have you looked under the sofa?
 
I haven't yet reset it

I've always had issues getting into the BIOS ( only have usb ) my g 15 never works and my Microsoft wireless 8000 does sometimes, so this again may be why I can't get in :/
 
I didn't mean that you had reset it but that it has been reset for some other reason. Try and get hold of a PS2 keyboard to test with.
I wouldn't throw a Windows DVD at it until the BIOS has been checked for a possible reason for the failure.
 
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Ok the BIOS is fine, I used a spare keyboard.. the pc seems to be seeing both drives in the raid array but. Separately, is there a fix for this or does this again mean a reinstall?

edit

once i got into the bios i saw that somehow the hdd configuration had simply been turned to ide

changed this, all fine


SO

why doesnt my G15 keyboard allow me to get into the bios? the extra keyboard i used was another basic USB dell one

thanks for all the help?
 
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Something to do with the LCD screen. The motherboard BIOS gets confused when it sees both the keyboard and the screen on some systems. Not unheard of, check Google.
 
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