I changed my power supply recently, because buying a graphics card (ATI Radeon HD 4870). The former 300-W power supply was not enough.
Since I installed the new power supply, nothing else works: the power supply does not start, no fan and no hard disk, etc. I did the tests by connecting all drives, recorders, etc, or just the motherboard (the connector 24 pins 1 + 2 connectors for 4-pin 12V): it does not change. If I return to the old power supply, it works again (except the graphics card, but that's a detail).
This new power supply is supposed to be of good quality: Corsair TX 650 W, mounted on an "old" (3 years) PC: Compaq Presario SR1710FR (Motherboard RC410-M ECS-Asterope GL8E).
I read on the net that there were some inconsistencies between the power supply and the "old" motherboards. What is it exactly?
Will I have to change the motherboard just to get this power supply?
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