Asus Z87 Pro will only go to bios(wont boot hard drive)

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enigma322

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Apr 13, 2007
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So I got a ASUS Z87 Pro, got everything to start up fine, and it even recognizes my hard drives in the bios, but when I either restart or go into boot mode, it just restarts and goes straight back to bios.

I updated the bios to version 1707 because version 1.5 didn't have any files I could boot from a flash drive.
http://support.asus.com/download.aspx?SLanguage=en&p=1&s=45&m=Z87-PRO&os=29&hashedid=Ojh2oYkBPWOsgT1v

I don't have a cd drive, so I can only boot from a flash drive.

I tried both a SSD with no windows on it and a regular hard drive with windows 7 on it.

Any help would be great, thanks
 
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techgeek

techgeek

Splendid
Apr 11, 2004
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Are you sure your flash drive is bootable? Have you tried to boot another computer with it?

Have you set your boot options?

Something I just though of, does your motherboard had DirectKey? Mine does, it has a micro button switch on the motherboard as well as a 2 pin header to connect a switch. If it does, check to see that the microswitch isn't being pushed in by something. If it has pins too, make sure they aren't be shorted by something. The purpose of this feature is to take you directly to the BIOS.
 
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smorizio

smorizio

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Jan 22, 2010
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on your motherboard the two dark brown sata ports are asmedia data ports and wont boot hard drives. make sure your on the intel yellow sata ports and the sata ports are set to achi mode. use the microsoft iso to usb tool here.
http://www.microsoftstore.com/store/msusa/html/pbPage.Help_Win7_usbdvd_dwnTool
you need a fat32 formated 4g usb stick to make a bootable usb stick.
in the bios set the usb stick as first boot device. after windows installs if the boot error still there under the boot tab make sure bios set to boot from efi and older devices if it set to boot from efi only you may get that error.
 
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allendalelad

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Dec 15, 2013
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Hi,
Are you sure about this? I also have boot problems and have checked my Sata connection 3x and in the Asus MoBo user guide is says that these connectors connect to hard disk drives. Your comment seems to be in contradiction. Could you clarify please?
Thanks for the post anyway - all comments help in the end.
 
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