Graphics card not being detected

i wud say stick with the Corsair VX450 for now and chek whether the replacement works with ur current setup.....

And as far as i no if the 5850 was overloading the Corsair VX450 then ur PSU wont start only,,,,,,,

Can u tell me one thing wen u powered ur system for the first time with the 5850 was the CPU fan and all other components running??

This may or may not be suggested by others but i still wanted to say

Corsair VX450 has one PCI.E 6 Pin connector, but it also has 6 molex connectors. Two of these can be easily converted to a PCI.E 6 Pin connector via molex---> PCI.E 6 Pin converter.

With HD5850 + VX450, you have enough headroom. ~100W.

In 100W you can attach a lot of peripherals, and be good to go.

Wat say huh ?

Ya it ran ok not only for the first time but for a couple of times .. I am planning to get the VX550 but will the UPS be overloaded at startup?since its a 650VA one ..

If u r extremely tight on budget try my method "Corsair VX450 has one PCI.E 6 Pin connector, but it also has 6 molex connectors. Two of these can be easily converted to a PCI.E 6 Pin connector via molex---> PCI.E 6 Pin converter."

Else exchange ur VX 450 with some cash max 2k-3k for VX 550 if its new or on warranty period

I can spend money on VX550 but not on both UPS and PSU .. anybody using this combination .. VX550 AND 650VA .. please tell whether these two will be ok?probably getting them tomorrow ..

VX550 (~5.6k) will be sufficent even if you buy 5870/equivalent nVidia card + i5/i7/i9 rig. ( though u have a ATI 5850 )

If you just want to save your works and shut down/hibernate your machine, 650VA would do (2-5mins of back up depending on load). And for more back up you can get 800VA,1kVA etc. But they will cost you more.

Getting the replacement VX450 tomorrow .. should I use it or change it to a higher model .. please tell.

Any updates?

What did you finally do ? Did it work ?

If it is not getting detected, there are all the factors mentioned above. Don’t try all of them together, then you wouldn’t know what the problem was even if it starts working. Do it one by one. Trial & error. I know it is tedious, but there’s no other go. First check the power connectors. Is the PCI-E connected to the card. Is your PSU able to drive enough power?

yup finally!! .. got the 450 replaced with a 550 and finally it worked .. .. thanks everyone here for helping me out!!