OS reinstall

[starobin]

the thing is that I bought this machine long time ago on ebay, and it has vista now, but on the bottom I see the seal for xp professional, so I assume that this is installed by somebody after. May be it is a reason? I tried everything and can't do anything. I have a usb cd/dvd drive and xp cd, but it doesn't not let me to reinstall even, it says always some errors and etc. don't really know what to do now

[Atreides]

Can you elaborate on what the error is?

Also I'd recommend a more descriptive threat title in the future.