Blue screen coming out of sleep mode

I don't know what I did to changes things but I recently started to get BSD's when coming out of sleep mode.
I'm using W7 x64 Ultimate retail. Complete specs are:
Custom Built ASUS M4A79T Deluxe - AMD X4-955-Corsair XMS3 8GB DDR3 Memory-XFX HD-487A-ZHFC Radeon HD 4870 1GB Vid card - Sony & Pioneer DVD Drives-HAF922 Case-1 WD 1TB, 1 Seagate 1TB and 1 Rack Drive-HVR 2250 & HDHomerun Tuners- Creative Soundblaster X-Fi Titanium- Acer H233H monitor-1 ATI DCT-W7 X64 Ultimate

Please let me know if you need more info.
Thanks in advance

I'll try turning off hybrid sleep and see how it goes. I've not changed any settings in a very long time.
As for Realtek drivers, I have a dedicated sound card and have integrated sound turned off. I'll double check the BIOS to make sure that's not changed.

Thanks for the help.

I turned off hybrid sleep and applied a hotfix and this morning, I didn't get a blue screen. 1 good try does not make it a success but I hope I'm on to something. I'll update the network drivers too.
Here's the hotfix I used: You receive various Stop error messages in Windows 7 or in Windows Server 2008 R2 when you try to resume a computer that has a large SATA hard disk

Dang it, today I again got the blue screen after coming out of sleep mode. It's back to the drawing board.