Hello,
I would suggest you to verify your LindowsOS 4.5 CD with following link.
http://www.lindows.com/checksum
Let us know if you still facing problem.
I would suggest you to boot with diagnostics mode and put the last 10-15 line here. so we can try to troubleshoot it.
Also, send us the complete hardware information of your system? (hdd,video card etc. with make and model number of each product)
Thank you,
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Lindows > window$