I did some research in other forums, and this is indicative of a RAM issue. First off, make sure that your RAM is the same brand, speed, and preferrably size. Download memtest86 onto a bootable CDRom and boot from there (note that downloading the memtest app from memtest86.com gives you an ISO and requires you to use a program like Nero that supports ISOs to burn it into a bootable CD). Once you have booted from the CD, run some diagnostic tests on your RAM and see if any errors pop up. If so, the problem lies within your memory. Here's the link to memtest86.com:
Another option I found is that you may have a corrupt virtual memory page file. To fix this, follow these directions (copied and pasted from another forum):
01. Right-click My Computer and press Properties.
02. Select the Advanced tab.
03. Press the Settings button under Performance.
04. Select the Advanced tab.
05. Press the Change button under Virtual memory.
06. Select No paging file and press the Set button. Press Yes if prompted.
07. Press OK, OK, and OK.
08. Shutdown and restart your computer.
09. Right-click My Computer and press Properties.
10. Select the Advanced tab.
11. Press the Settings button under Performance.
12. Select the Advanced tab.
13. Press the Change button under Virtual memory.
14. Select System Managed size and press the Set button. Press Yes if prompted.
15. Press OK, OK, and OK.
16. Shutdown and restart your computer.
You can thank "That Computer Guy" forum for these directions. I would definitely try the second method involving the page file first. If recreating the page file doesn't remedy the problem, then the problem may lie physically with your memory. Let me know what turns up.