1 - replace hard drive with SSD
2 - keyless is fine if you want to get your machine running as cheaply as possible....longevity wise I've seen a disproportionate amount of hard drive failure with the keyless drives, but I partly blame that on the cheap Chinese knock off brands they are usually sold on. I've personally used the keyless Force 2011 and so have others I've talked to, and we all have occasional problems like crashing mid-game, high scores not saving, etc. There are several security checks that are not patched out on the version being sold on eBay right now. In my games, I have keys in all of them
3 - could be corruption or bad hard drive, or even bad RAM. your machine is from 2002 so who knows, these old tired Force boards are all nearing the end of their lives also