C2d e6300 1.86 (oc at 2.2)
Corsiar gaming 4gb ddr2-800
Asus P5B
Saphhire HD5670 512MB ddr5
Cooler Master GX 650W
Ati Catalyst Version 2009.1110.2225.40230

Everytime i use ati overdrive to tune the hertz, no matter overclock or downclock, even just 1MHz different, my graphic card will went hang and alot striped vertical line.
I have to off my pc tru the power button and restart.
What is wrong? Why can I oc my 5670?

Not my picture, but is exactly wat happened like mine after i press "Test Custom Clocks"

=.=""

this is where the application is testing the new overclocked gc to see if it stable or not...

Wtf? Such a crappy graphic I tot it went hanged ==
Anyway, thx for ur reply, I`ll try again.

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Added on October 29, 2010, 2:52 pmIt doesnt work, this time when i press "test custom clocks" it just went blank...
I leave it for 5min, and still nothing came up. I pressed keybaord, every button also cant revert back... @_@

This post has been edited by Auraguy: Oct 29 2010, 02:52 PM

restart pc still black screen?

Dude try run the stability test for ur GPU instead of OC it...

you can always use Furmark or MSI Kombuster...go ahead and try...

Are you sure thats stability check?
After I update Ati Catalyst 10.10 , everything went fine already. No such striped screen in 10.10.

Thx to you, but actually, the test went okay in 10.9 , it run 20k frame (10min) with no problem.
But then after i quit the program, whole screen went blank, even after restart, after i logged into windows, where all icon refreshed, then it went blank again.
Immediatly I realise its driver problem, then i went safe mode and rollback.
Then install new catalyst 10.10.
Now I overclock with no problemo~

THX LYN-ian.

P/S: I suggest ATI user update 10.10. =)

This post has been edited by Auraguy: Oct 29 2010, 08:20 PM