stupid question but worth a check , your card have a molex (4pin power) connector , is a molex connected to it? if not then its a very good idea to connect one , and if alredy connected then unplug and try another
have a look on the card itself see if the fan is spinning if not then clean it & oil with wd40 or get a new one - but if thats the case then cleaning/getting new fan may not be good enough as due to excessive heat that was caused due to non spinning fan its possible it caused permanent damage to the gpu
also it may be your power supply , get speedfan click here take a screenshot and use “manage attachments” button or upload to imageshack[/QUOTE]
Hi I have a similair problem to this, I have an ATI Radeon 9800Pro, I have updated the driver completely at least to the best of my knowledge (used CCC). I also have tried in Device Manager to update all components and all appear updated.
Now my problem was worse at first, when I started up my computer I had lots of different colours and strange GFX problems, and if I opened FF and scrolled down a page, the images and texts would appear to layer upon each other more and more and closer and closer with every scroll. Now it seems to have become a little less problematic for now at least but whenever I move around an open window the frame will lag far as will FF and IE lag also alot when I scroll up or down. Also I am a WoW player and I cannot open the game either because it says there is an error although the error message unfortunately doesnt shed any light whatsoever as to what the problem is.
So in hope someone here can help me I ask for any advice, I will attach a screen of a speedfan reading