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I want to install Windows 8 RP using my pen drive.

I have made it bootable using Windows 7 USB DVD tool. I have changed the boot order and set my pen drive's priority first. When I start my computer, I can see the bootscreen of Windows 8 RP (black screen and big "Windows" written on it), but the setup doesn't actually start.

Then my Windows XP starts running automatically. Also I don't want to run the setup from Windows Explorer itself because it will install in the same drive where XP remains.

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can you specify what hardware are you installing the win8 rp.. and the OS bit version(x86/ x64) – Vimal Venugopalan Aug 24 '12 at 7:47
try making the pendrive again. either pen drive is faulty or your system doesnt support win 8 – 168335 Aug 24 '12 at 7:49
Problem solved people ! I formatted my C drive using windows xp installation CD and then tried to boot from the pen drive, magically I was then able to boot from the pen drive and installed windows 8 rp successfully, thanks for your help by the way. – Shanks Aug 25 '12 at 12:46
@slhck - Does the tag Windows 8 really apply here? This question was asked released well before the RTM build was even released. Who knows if the problem was because it was a preview build or was just a configuration problem. If it was the later then applying the Windows 8 tag is appliciable. – Ramhound Oct 26 '12 at 12:57
@Ramhound I don't know, I didn't add it. But you're right, the -preview makes more sense here. – slhck Oct 26 '12 at 12:59

Some of the CPU x64 are not supported by the win8 rp x64 version. You can read through the link to get an idea about what is the actual reason of it not getting installed.

Edit: not motherboard but CPU. Corrected my answer

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How can a motherboard not support Windows 8 if it supported Windows 7? If anything it sounds like a CPU problem. – Ramhound Aug 24 '12 at 15:42

If there is a BIOS upgrade avaliable, try that.

I had to upgrade the BIOS on my laptop before I was able to get it to boot the Windows installer from USB, so that might help you too.

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