Sleep leads to Reboot

I have been wanting to ask this for a while now. When I put my PC (Windows 7 Ultimate 64bit) into SLEEP, 98% of the times, it works properly.

However, 2% of the time, it would REBOOT instead and even sometime, reset my BIOS. It has been like this for the last 4 years.

Question:
Is it a RAM setting of some type? It doesn't happen enough; it has been hard for me to diagnose. When it does happen, then it just screws everything up. Fortunately, I have a copy of the CMOS saved.



GIGABYTE GA-X58A-UD5 LGA 1366 Intel X58 SATA 6Gb/s USB 3.0 ATX
Motherboard: http://www.newegg.com/Product/Produc...82E16813128422

Intel Core i7-930 Bloomfield 2.8GHz LGA 1366 130W Quad-Core BX80601930
CPU: http://www.newegg.com/Product/Produc...82E16819115225

Patriot Viper Xtreme 12GB(3 x 4GB) 240-Pin DDR3 SDRAM DDR3 2000(PC3 16000) PX7312G2000ELK
RAM (24gb): http://www.newegg.com/Product/Produc...82E16820220543

SanDisk Extreme SDSSDX-120G-G25 2.5 120GB SATA III
Main SSD: http://www.newegg.com/Product/Produc...82E16820171567

OCZ ModXStream Pro 700W Modular
BFG Tech BFGE88512GTSE GeForce 8800GTS(G92) 512MB 256-bit GDDR3 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card

Actually, what would be a good program which checks the settings of my RAM and diagnose if they have been set properly (such as voltage, channels, etc...)?

Update: http://windows.microsoft.com/en-US/w...-your-computer

Have you looked in Event Viewer after the machine boots back up to see if you see anything?

As you know - people could suggest 80 different things but it could be weeks before you know if anything fixed it.

I have not but that is a good start. Will do. Thank