help installation problem

i just wiped my pc and I tried to reinstall fs9 and at 25% it came up with discoveryvideo.exe is in use or your hard drive is full
Flight Simulator and other chat
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https://forums.simviation.com/phpBB3/viewtopic.php?f=20&t=58400
You say you wiped you PC... meaning? Formatted or simply uninstalled FS?
Can't find out what discoveryvideo.exe is... but unless you have a program whose executive has that name, it's almost sure sign of having an unwanted guest onboard (read: virus). Are you certain of your system's health?
It MAY be that one of the installing disks is damaged and the error is driving insane the system itself. Try and install FS on another PC and see is the error (the same or another) represents itself.
it does it on all pc's
Never heard the toothpaste solution, but one that I know of that can often work, provided the scratches are light, is body oil. Sounds stupid, but stay with me... Take your finger and swab your nose, forehead, behind your ears etc. Then rub that finger on any visible scratches you find on the disk. Next, VERY LIGHTLY AND CAREFULLY, clean as many of the smudges you can from the visibly good parts of the disk.(The idea being to leave the oil in the scratches, and not on the good parts of the disk.) Then try the install again.
Again, sounds stupid, but when I've tried it, I've had a 50-50 success rate.