Recent BSOD crashes

I updated my computer about 2 months ago, and just recently I've had two BSODs. I never had BSODs in Windows 7 before, so it's sort of worrying me. I was wondering if somebody could help me pinpoint the problem here.

- I'm running Windows 7 Professional x64.
- It's a fresh install on a formatted hard drive from 2 months ago.
- Retail version, I downloaded it through Microsoft's student program.
- The hardware in my computer is of varying age. Most components are from recent years.

Additional dump files are attached to this post.

Thank you for any help!

BSOD caused by your C-Media software/driver(probably Montego sounds card driver), uninstall/update such software
http://www.cmedia.com.tw/EN/DownloadCenter_Detail2.aspx?pserno=0&dtype=ALL

Thank you for your assistance, but I am still attempting to fix these intermittent crashes. My sound card (an HT OMEGA STRIKER 7.1) seems to have the latest drivers. However I have also tried completely uninstalling it from the computer, and still got BSODs. My system information remains the same as in the first post, but I'm attaching new recent dump files, in case they indicate any sort of difference from the originals. The BSODs seem to happen both while I'm actively using the computer, and when it's relatively idle.

I'm starting to think that this may be a hardware problem, though I'm not sure what. Any further help would be appreciated, thank you very much.