Sorry guys.. Could not post earlier as didnt had access to Net connection
Okey the problem was mostly with the PSU... Thats what i can comprehend from the thing... The PSU has two Molex lines coming out...
This is how i have distributed them:
Wire 1 goes to HDD, FDD & Optical Drive.
Wire 2 exclusive for GFX card.
I was short on time so could not experiment much on the thing. Just had like 20 minutes as i had to leave for some place urgently. Wanted to try a benchmarking software like 3dmark or RTHDRIBL to test out the stablity but noting was installed onto the PC. But card was working fine from the looks of it.
I have recommended Tarun to use the setup as of now. Also Tarun has not got any intake/exaust fans in his pc as of now. Traun get them installed asap otherwise your PC *will* cook.
The first upgrade tarun should be doing if he does should be a good PSU. He was a little short on budget so i have told him to buy a good PSU when he *can* and should not buy anything cheap as of now. A PSU with decent dual 12V rails is a good buy. Iceing on the cake will be if the PSU has a built in PCIe Power connector.
Also one thing which was wrong in tarun's setup was that he was using a 20 Pin ATX connector while the PSU had the extra four pins on it. Corrected that too.
So as for now my advise to him is :
1. Install fans asap.
2. Benchmark the PC for atleast 2 hours non stop. (3Dmark 2006/RTHDRIBL)
3. If possible get a *good* PSU
Possible choices:
Antec SP2/TP2 400+ Watts
Zebby Diamond 540/640
Vantec Ion2 Storm (Singal high 12 v Rail)
Powersafe 450/500 Watts
@tarun chk this link
Newegg.com - Once You Know, You Newegg chk the fifth pic... There is nothing wrong with the PCIe Power wire of yours
...