I have a HP Compaq dc7800 Convertible Minitower PC which had a 365W PSU! I have installed a new Corsair CX500 (500W PSU) and a new GTX550Ti video card on it. (A PCIex16 power cord attached to the video card and I split the EPS 8-pin, as it is splittable, and used half of it for the CPU power.)
When I powered it on the motherboard has green light, no beeps (no RAM or CPU issues), the fans start up normally, the HDD spins but there is no screen output and after 40 seconds the fans begin to spin faster and faster and remain spinning at 100% power until I have to power off the computer. The fans are controlled from the motherboard! Not the PSU!
I removed the graphics card but still the same problem. I used the other half of the EPS without the new graphics card but still nothing. I reinsert the CPU and RAM but still had the same problem. I removed the new PSU and insert the old PSU with no result! Still the same problem! Anyone help?
When I powered it on the motherboard has green light, no beeps (no RAM or CPU issues), the fans start up normally, the HDD spins but there is no screen output and after 40 seconds the fans begin to spin faster and faster and remain spinning at 100% power until I have to power off the computer. The fans are controlled from the motherboard! Not the PSU!
I removed the graphics card but still the same problem. I used the other half of the EPS without the new graphics card but still nothing. I reinsert the CPU and RAM but still had the same problem. I removed the new PSU and insert the old PSU with no result! Still the same problem! Anyone help?
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