OS has not been detected

zepfan_75

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Jan 3, 2011
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Hey all,

I am trying to install an SSD into a pre-existing rig and after installing windows I tried to boot from the SSD and an error message said " Operating system not detected." I can't think of the cause of the problem. Could anyone help me on this?

SSD: Samsung 840 Pro 128Gb
OS: Windows 7 Ultimate
Mobo. Asus P8P67-M Pro

Thanks for any help given!