4 months ago
Upgraded to 5700 RX and only have a 450W power supply. The GPU fan comes on, but 'No Display' shows on monitor. Could lack of power be my issue?
MOBO is compatible. Inserted the new card into different PCI slots - no change. Changed PCIe ports to 3 compatibility. Reseated RAM. Reset CMOS by pulling battery. Fast Boot off. Tried 3 different HDMI cables and 2 different monitors - no luck. Original card works fine (in all slots), so MOBO is not damaged.
Please forgive my inexperience...The RX has 6pin PCI and 8pin PCI plugs. Does each one need it's own power cable? In other words, they can't be spliced on the same cable? (6pin to 6pin on PSU and 8pin to 8pin on PSU).