Hey guys 
I have had a R9 290 OC ( gigabyte ) for a while .  it has had a repair under guarantee/ RMA  , it had a VRAM chip replaced according to the Gigabyte support  RMA team . The original card BSOD a lot 
Since the repair there has been an extra 45 seconds on the login time and a black screen lag on boot . The log in screen loads up fine, however once I enter the system credentials , there is noticeable lag/ delay  . The timer just spins for around 40  seconds ( 40 more than it should be on ssd ) , then there is a black screen with a movable cursor for around a further 30 seconds - then Windows appears and works perfectly afterwards   

This is a Mid -high end machine , running a Samsung EVO SSD with Windows 8.1 64 . If I replace the video card with a spare (HD7790) there is no lag or wait , it is almost instant , as it should be 
I have ran driver cleaner/sweeper and re-installed the latest drivers and tried the Beta drivers a second time, this did not solve the boot time issue . 
I then reset the motherboard bios , which again made no difference 
Is the card still faulty ? 
I have since tried re-flashing the GPU bios but again made no difference 
I also want to add that I have been gaming  and the card has been given solid performance .  
I guess my next step would be to try the card in a different rig ?