Help?! SL crashes my PC :(

Ok, maybe it's not *just* SL but I'm too scared to see what else does it. Basically, the other day I was on SL, and my client starting lagging VERY badly, and kept crashing, until finally my pc froze. When I restarted I got the blue screen of death, and was then only able to use my pc through safemode.
The thing is, I have two harddrives, they are mirrored, and I found the only way to get my pc sorted was by error-checking the second harddrive. However, whenever I run SL now, my pc fails me again and I have to repeat the error-checking process to get it back up again. When I look at my E: harddrive it appears all the SL icons are still there, unlike in the C: drive even though I've currently uninstalled SL. And... when I double clicked the uninstall icon just to see what happens, all the writing was in German :/

I was just wondering, is there a way to resolve this problem. Would SL run safely on my computer is I disabled the E: drive (and would I lose anything on that if I disabled it)?, is there anyway I could safely get rid of the SL folder from that drive without merely deleting it? Or would I have to reinstall windows to resolve the issue properly?

I hope I get some answers soon and thank you in advance for any suggestions

Oh and actually, when I installed the OnRez client, the same problem occured!