was running downloaded copy of xp started getting problems when trying to download updates saying this is not a genuine windows product have since purchased windows xp pro oem disc but wont let me install have wiped HD and tried again but only gets so far telling me could not install certain files after about 80% install goes to blue screen with nothing and wont let me do anything can you advise

thanx

still no luck installing windows xp message reads NTLDR missing press ctrl alt del to restart do this and same message appears,what is NTLDR

How did you "wipe" the drive?

What was the source of this "legal" XP?

OEM versions are generally pre-installed.

If your current version is indeed legit and a full version then you may just need to wipe the hard drive to remove the former version.

Formatting does not wipe a drive. You need a program such as Kill Disk.

http://www.killdisk.com/

used webroot system eraser to wipe hard drive oem disc was bought over internet and came with hologram disc and product key from dabs.com

What is NTLDR?

http://www.computerhope.com/issues/ch000465.htm

Perhaps a bad CD. Or else the drive was not completely wiped and is still looking at the old NTLDR.

Does your keyboard have a "shift" and punctuation keys? They help us read. Thanks.