I replaced my 7800gt HSF with a watercooling one. Fitted it fine and installed it into my pc. I ran it for about 10 mins, then realised that my pump was failing. The waterwas hardly going round. I had to resort back to air cooling. I refitted the stock HSF and now when I start it I get artifacts straight away, even in the bios. Is it knackered or fixable???
