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I am using an ASUS K50l with a windows 7 home premium. My DVD Rom reads DVDs normally, a bit laggy but does its job.
However when it comes to bootable disks it identifies them as blank DVDs. Is there a way to fix this? I need to boot from a Windows 7 Home Premium DVD in order to fix the dual boot problem I am having.
But there was one Windows 7 Ultimate DVD that worked just fine for me but was not what I needed. Any thoughts? Thanks in advance :D

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Is the BIOS set with the DVD/CD drive ahead of the hard drive in the boot order? – CharlieRB Mar 27 '13 at 13:11
1) Was the one DVD which worked a original (pressed) DVD, and are the others burned recordables? 2) Does your DVD player read both DVD+R and DVD-R disks? (most modern ones do, if it is old it might not). 3) Did you change SATA cables? (Sounds insane, but my computer will not boot from DVD if I connect it to the intel hosted ports. If works if I connect to the the extra SATA ports of anopther chip. Though that might be a BIOS bug on my board). – Hennes Mar 27 '13 at 13:29
1)Nope, it wasn't, but it was of no use for me since I needed a Home Premium edition to erase BackTrack 5. 2)Dunno about DVD+R, but certainly DVD-R. 3)Can I change this in my laptop?! – mohdhamm Mar 28 '13 at 12:15

Why not download a Windows 7 ISO, unzip it, and copy that to a USB thumbdrive? Then you can just boot from the flashdrive.

Official Windows 7 ISOs(legal):

create bootable flashdrive with windows 7:

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Thanks I'll try this at night (free download :P), and I'll keep you up with any further updates. – mohdhamm Mar 28 '13 at 12:44

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