Solved my windows 7 sometimes suddenly crashes

Could you go into Event Viewer (type Event Viewer in search) and look at the app and system tabs. see if there are errors listed and if so upload some pictures of it.
 

My Computer My Computer

Computer Manufacturer/Model Number
Macbook Pro 15" (2011) (Matte Version)
OS
Win 7 Pro x64 SP1 OS X Snow Leopard 10.6.7
CPU
Intel Core i7 2820QM 2.3GHz (Quad-Core)
Motherboard
N/A
Memory
8GB 1333 MHz PC3-10600 DDR3 SDRAM
Graphics Card(s)
ATI Radeon HD 6750M (1GB, GDDR5)
Sound Card
N/A
Monitor(s) Displays
1 Display
Screen Resolution
1,680 x 1050 (Matte Screen, Anti-Glare)
Hard Drives
750GB SATA (5400 rpm)
WD My Passport Essential 1TB Portable Hard Drive
PSU
N/A
Case
N/A
Cooling
N/A
Keyboard
Apple Wireless Keyboard
Mouse
Apple Wireless Magic Mouse
Internet Speed
Max - 2.2MB/sec; DSL provided by Telecom NZ
Other Info
MS Office Professional 2010
McAfee Total Protection 2011
On a Laptop Stand (Hand-Built)
Could you go into Event Viewer (type Event Viewer in search) and look at the app and system tabs. see if there are errors listed and if so upload some pictures of it.

Hi Dean
I hope this is what you're looking for, i saved the event logs instead of screenshooting
View attachment 140928
 

My Computer My Computer

Computer type
PC/Desktop
OS
Windows 7 Home Premium x64
CPU
Intel Core 2 Quad Q9550 2.83Ghz
Motherboard
Gigabyte UD3
Memory
6 GB, 2X 2GB Corsair Dominator Twin DDR2 AND 1X 2GB KINGSTON
Graphics Card(s)
Ati Radeon HD 5750 1 GB
Sound Card
onboard, or MOTU 896HD FIREWIRE INTERFACE
Monitor(s) Displays
1x Acer v193HQ 18'5 1366x768 and 1x Netsys 23'6 1920x1080
Hard Drives
2 x Seagate barracuda 1.5 TB, 7200 rpm
PSU
Corsair 650W
Case
Antec Three Hundred Ultimate Gaming Case
Internet Speed
6 Mbit/s
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