Howdy! So the RX 480 does not work with the Seasonic M12-II evo 620 Watts Bronze??? https://seasonic.com/product/m12ii-620-evo/#tab-product_form_297_tab Any ideas?? Please share. I've read on this and it seems that a rx 480 requires a 30 watts and my Seasonic sports two +12v rails of 24x2 = 48 amps/576 W. I might be incorrect with the numbers above. Do excuse! Isn't this sufficient to run a rx 480? MSI recommends a 500 W PSU for a 150 W TDP. (bought the card approx. 2-3 months ago. Have been running it in "Windows Generic" mode.) Today I installed the very latest AMD drivers 17.8.1 - Aug 18th, for the rx 480, (hoping for some tweaking by AMD on this issue), but here are the common symptoms that I experience - I see the 'Windows Loading' screen and then BAM!! I see a "entering to power-save mode" on my monitor. (Similar to the one that we see when we Shutdown our computers). However, the system is still running, but without the display. I NEVER GET TO LOAD WINDOWS IN NORMAL MODE. I then have to use DDU to clean out the drivers, boot Windows in normal mode, but at this point, the GPU runs on the "Windows Generic Drivers", which is of course not what I am looking for or not what the card is intended to be running in such a way. In this 'generic' mode, I get to Windows and its kind of manageable. I cant get to AMD's GlobalWattMan to undervolt or fine tune the voltage/wattage. Things tried - I can run the Polaris Bios Editor when in the "Windows Generic Mode". 'Safe Mode' boot with the proper drivers installed, no other options to access anything else are available coz of 'safe mode'. Re-seat the GPU and double-checked the power connectors to have been fitted correctly. --- Is there a way to tweak the TDP/voltage via the Polaris Bios Editor? If so, what's the recommended wattage/voltage I should use? Maybe useful - http://www.legitreviews.com/amd-radeon-rx-480-undervolting-performance_183699 I can do the basic stuff only! That is, watch avi/mpg videos only. (No 720p or 1080p), Surf the net etc. NO GAMING!! Is there a way out of this? Or upgrading the PSU is the ONLY endgame!? I've also attached the Polaris BIos editor screenshots with the default values picked up by the bios that I (somehow) managed to save. Will flashing the bios of this to that of a RX 580 will help? Just wondering! I have the following tools; ATIFlash 2.77, MSI Afterburner, Polaris Bios Editor 1.4 & Catalyst 17.8.1, ready to go!! Let me know if more info of any sorts is required. Thanks in advance!