upgrade the hardware to something newer and run the software for the games.
going to nip this one now....
short answer, no.
Longer answer, Merit locked the software from running on anything but very VERY close match boards. IE exact same make/model. you can swap the hardware for newer boards used in other merit games PROVIDED you have at least the version of software that that particular board was used on. if you have at least ion 2009 so you could swap it out for either the original purple ECS board it currently has, an Asus board used in the aurora... or the intel board used in the RX (with some modification to mount the other 2 boards) the machines all have a security key to allow it to run that particular years version of software. you can't just "upgrade" by installing 2014 and be good, you'd have to get a 2014 security key as well. so if you have a security key for 2009, you'd have to stick to installing 2009 software with that machine or buy another security key to upgrade. you of course could just toss in whatever... install windows or something and play flappy bird with the touchscreen.
1: could be caps... but does it play blind? is it maybe an issue with the monitor backlight? or does it go "no signal" or just crash? could be overheating CPU. you should probably remove the heatsink off the CPU and clean off all the old thermal paste stuff and replace it anyways. it was garbage to begin with. also could be bad ram. if it has the original factory stick, it's probably failing (or soon will). i have a box full of dead ones. 512mb is more than ample for even the newest version of software if you do replace it.
2 : probably just needs the software reloaded. if it is 2009 as well, try swapping the hard drive from the "goes blank" machine into this one and see if it boots proper. if it's not 2009, you'll have to swap the security key from the other one over so it will boot otherwise it will throw an invalid key for version error. if it works fine with that drive, reinstall the software on the old drive and see if it works... if still crashing replace the hard drive. anything 20gb and up will work just fine.
3: could be bad ram or failing hard drive. you can try reloading the software... but if it is the harddrive and it is failing...and if the version of software on it is 2004 or earlier, you must use a merit drive to replace it...mid 2005 and after, merit unlocked the software so it would install on any harddrive. (after a nag screen warning you about using a non-merit approved drive.)