no VGA light

Hello! Long time browser, first time posting. I have viewed dozens of other posts on this topic and still haven't found a solution. Switching from an MSI 1070 to a Sapphire Pulse 6800 - new. I had followed the common advice (the TH GPU install guide) of running DDU and swapping GPUs. Checked...

My Computer Is Dell Optiplex GX270 And Motherboard Is Intel R Pentium R 4 CPU 2.80 GHz 2.79.Its A 32-Bit OS, First I Had Win. XP SP 3 Installed With All The Drivers And Then I Formatted and Installed Win. 7 Ultimate 32-Bit Version. The Graphic Drivers Which Earlier Worked In Win XP. Worked Now...