I have a HP 9925nr Entertainment PC I am fixing for a friend. When i got it, it would not post past the BIOS. No primary drive was detected. I removed the drive checked it on my machine, ran fine--no bad sectors etc. Put it back in, still did not see it. Put in a new blank 2.5, BIOS saw it, but cannot load new OS from DVD. Still says "NO Operating System Found". Is this a motherboard issue? or what else could it be. I have tried everthing; booting from USB, boot from external USB DVD, nothing works. And Yes, i ran the HD test in the BIOS and tested fine.
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