MSI R9 390 issue?

[CoreBlaster]

I brought a new gpu the R9 390 by MSI, i installed it turned on my pc it booted up got past bios screen then my windows loaded it as soon as it came to my log in screen the screen started flashing on and off, the GPU fans stopped working and it kept rebooting automatically, again the same issue, i put my old gpu back in works fine please help i am not very knowledgeable with these things

 

[Suztera]

What is your pc specs?

 

[CoreBlaster]

CPU: AMD fx 8320
MB: GIGABYTE 78lmt-usb3
PSU: CX 750W
RAM: 16gb
2tb hardrive
250gb ssd
Windows 8.1

 

[Suztera]

CPU: AMD fx 8320
MB: GIGABYTE 78lmt-usb3
PSU: CX 750W
RAM: 16gb
2tb hardrive
250gb ssd
Windows 8.1

Did you plug in all the pcie cable required for the card?

 

[CoreBlaster]

yeah its all plugged in like i said from turn on it works fine through all the bios screens fans work everything fine but then it comes to the windows log in screen then the fans turn off and the screen starts jumping

 

[bignastyid]

With the old card installed remove all the current video drivers and software with DDU(clean and shutdown option), then try installing the new card.
http://www.guru3d.com/files-details/display-driver-uninstaller-download.html