Hi darem, welcome to TSF...
Are all the games getting installed via disc? If yes, it's probably a good time to use a specialist lens cleaner for your cd/dvd player as that may help.
Are you able to copy data from other data discs successfully?
If cleaning the lens or using other media doesn't help, it may also be worthwhile to check the cabling between the device and motherboard.
You could also try to check the discs in a friends computer. If they install fine, then you'll know for sure that your cd/dvd drive is either faulty or in need of a good clean or you need to replace or resecure the cabling.
Hope that helps :smile: