Attempted overclock of 3Gb AMD Radeon 7950

StevenW_75

Honorable
Feb 23, 2013
1
0
10,510
Hello,
Can anyone help me fix this - I attempted to see what overclocking my 7950 graphics card would be like, with a view to switching off overclocking / overdrive afterwards.
When I activated graphics overdrive in the AMD Vision centre, the pc crashed - the screen intermittently blacks out and I'm now unable to access the AMD vision centre to reset without the system becoming unresponsive again.
How can I return to the pre-overclocking attempt state?
Tried system restore, but no help.
Many thanks
Steve