No Signal D-Sub

Registration date
Saturday September 12, 2015
Last seen
September 12, 2015
- Sep 12, 2015 at 01:51 AM
I have been experiencing ongoing issues with my monitor going blank, shutting down the PC and I have to jiggle the mouse to get the PC to 'wake up'. Sometime the PC shuts down completely.
So far I have completely changed the tower and all components and bought a new monitor and am still getting the error message.
The RAM has been replaced, the power pack has been replaced. There are very few components that have not been replaced and yet it is still happening.
It is random and can happen at any time and in any program - email, word processing, facebook, you tube...
I am wondering if it there is something in Windows 7 that needs to be changed....before I upgrade to Windows 10.