Installed new graphics card in my friend's PC and everything is going wrong

Riznir

Commendable
Sep 5, 2016
1
0
1,510
So yesterday I helped my friend install a new graphics card in his prebuilt Dell XPS and at first it went fine, we pulled out his old card (GT 635) and replaced it with a new GTX 970 as well as adding in a new PSU (630 watt). The PC booted and we got the proper drivers, he shut down the PC and now it gets stuck in a bootloop and doesn't post. We removed the new card and used the onboard graphics to uninstall the nvidia drivers and the PC still wouldn't post with the 970. We also tried putting in the old card (which does work) and reinstalling those drivers before putting in the 970, nothing. So today he put the old back in and says his mouse clicks don't register and some other things were going wrong. Help
Side note he has a 5400RPM 1Tb HDD that makes some awful noises but he said it always did that, and he was on Windows 7 but moved to Windows 10
 
Solution
What brand and model power supply did you get?

Did you check for a BIOS update before swapping the cards? If the system boots on the old card (despite those "some other things going wrong"), I'd get a new hard drive, SSD if possible, install Windows clean on that and see how things work. If it works then, once you make sure you have the latest BIOS and chipset drivers, try the 970. If that does not work, the 970 you got may just have issues with the Dell OEM motherboard.
What brand and model power supply did you get?

Did you check for a BIOS update before swapping the cards? If the system boots on the old card (despite those "some other things going wrong"), I'd get a new hard drive, SSD if possible, install Windows clean on that and see how things work. If it works then, once you make sure you have the latest BIOS and chipset drivers, try the 970. If that does not work, the 970 you got may just have issues with the Dell OEM motherboard.
 
Solution