mfehidk.sys BSOD

Hello,
I was refered to here from Seven Forums after they discovered that I'm running Vista. Earlier today I was playing Counter Strike:Source when suddenly all my programs crashed and my PC restarts. I then got a BSOD telling me that that .sys file was the cause. After some research I have discovers that that file has down with McAfee, I do have McAfee installed so that's not a problem. However a problem is that I try to restart and go in to safe mode (networking, command prompt etc) and the BIOS screen loads up then the BSOD shows up again so I'm unable to prevent it from running. Along with the mfehidk.sys I also have the parameters (i think they are called that) 0x0000007E (0xC0000005, 0x83C71400, 0x80399914, 0x80399610)
I'm running Windows Vista Home Premium x33. The last change I believe was an automatic update by Steam for Garry's Mod
Thank you for your time and I hope you can help me

I would consider doing a system restore.