Aspire TC860-GPU MSI GTX 660 GDDR5 2GB - while doing GPU upgradation facing issue-no display.

dascatting
dascatting Member Posts: 1 Newbie

so for the past 2 hours now I've been going through hell and back trying to install my new GPU (MSI GTX 660 GDDR5 2GB ) I've already upgraded my PSU (in play GS450p) and transferred the board to a new case all of that went smoothly but now as I try to install the new graphics card going through the process of using DDU in safe mode to remove the old drivers, installing the GPU with the 6pin power connector and making sure it's in properly, and turning it on. which results with a no display. then I put my old GPU back (GT730 which came with the unit), and it works fine, I ordered online and even before the seller shipped it to me, they tested it with the same serial number I don't know what I'm doing wrong or is the PCIE slot just locked to the GT730

(Full spec is a Core i3 9100

8gbs ddr4 ram

the mentioned 450w PSU and the mentioned GT730)

[Edited the topic title to include the topic issue.]