Two working graphic cards failed to work is the PSU faulty

morfinel

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Mar 25, 2009
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Hi

I have Ati 4870x2 which after changing thermal compound got 3 lights, Then I got working gtx 295 which as well do not work on my pc. I have removed all unnecessary fans and hardware and suddenly 4870x2 start however switch off after few min or 1 red light is showing. on the gtx 295 I got green light instead of blue, windows start but no display. is the issue stated might be linked to faulty PSU?

I have very old graphic card which do not need any power connection and it work fine. Is there any way to check psu.
 
The Hiper Type M 780W used CWT (Channel Well Technology) as the OEM. The component quality (i.e. Japanese primary capacitor with the rest being cheap Samxons) and operating temperature range would be equivalent to the Corsair GS Series PSUs that are also made by CWT.

They only had a three year warranty so they weren't considered premium quality units. They're only one step above entry level.