Hello. I have Dell XPS 8500 PC with Windows 8.1. Overall, the system works fine, but about half the time when I wake it up from sleep mode, the screen remains black as the hard drive makes repeated revving noises, eventually displaying a BSOD (KERNEL_DATA_INPAGE_ERROR). When it doesn't bluescreen, it wakes up from sleep mode after a few seconds with no problem, or makes the revving noise a few times but resumes activity normally. I'm a bit concerned, since I was going to update the BIOS to A12 from A09 to prepare for a new GPU (GTX 970) and 600w PSU. I wanted to resolve this issue first before I got into that, just to make sure my system was in optimal condition before I started to upgrade it. Thanks ahead of time for any help! I could really use it!