Depending on your Linux experince it might be worth looking at Amazon Web Services - you can pop up a CentOS Linux instance of reasonable spec for a web server on EC2 which is LIGHTNING fast compared to my other 'standard' web host. I run a few, and after the first which is free the first year, I'm paying about £15-20 a month per server - each of which hosts multiple sites.
You do need to know your way around the Linux cli, but if you do it's massively time saving to be able to launch a new server to do your dev work, and then just trashing and forgetting about it when you're done.
You can choose where you're servers are located (the closest location is Ireland) but I suspect they'd be quicker than a usual web host even if you went for the asia/pacific ones..
1. First post, so I'm building a rep as it were, and attempting to be helpful to get off on the right foot.
2. I'm a mac guy and don't do Windows stuff, so software wise I'm not much use.
That aside, given the list of stuff you've replaced, there really isn't much left on the hardware side of things to look at, except maybe assemble all of the 'replacement' parts as a new machine..
The errors are I/O hard disc related it would seem, and loading up a game would be thrashing the drive, which would make sense. Are they 5400rpm or 7200rpm speeds? Bigger number = better.
Also, what did you do when you replaced the hard drives? If you restored all of the software from back up disks, you might have restored the problem back too.. If that was the case, it would be worth nuking (good ol' fashioned format with a random data write afterwards), and then going through the rigmarole of reinstalling everything by hand again.
