Hi Nic!
Yes I have the issue with black screen after windows logon, since I got my computer at work. Here is my answers:
Are you willing to send your system to us?
No I can't, cause it is not mine.
Is your system a laptop or desktop?
Desktop
If desktop, what is the make/model of your motherboard?
Asus P8B75-M
What is the model of your CPU?
Intel Core i5 3330K 4x 3.00GHz
What is the make/model of your failing display?
Intel HD 2500
What is your operating system?
Windows 7 Professional
Is it a 64-bit or 32-bit operating system?
64 Bit
What display driver version do you have installed?
15.31.9.64.3165
What type of connection are you using? (HDMI, VGA, DP, DVI?)
VGA+DVI
What happens that results in the blackscreen failure?
Got my work computer with installed OS and some Drivers and 2 monitors (one is connected to VGA and second to DVI, both are identically).
So the VGA monitor works fine, for boot screen the DVI monitor works fine until the logon screen appears and go to sleep with no signal.
The fix with disable the HD graphics and enabling it back works well and the second monitor(DVI) comes to life. Tried many Driver versions. Some interesting stuff I found that if the second monitor don't work and I reinstall the drivers, the second monitor appears until next restart