AMD Radeon R7 250 Requirments (PSU)

ProLogicMe

Commendable
Oct 22, 2016
1
0
1,510
I recently bought a new graphics card (AMD Radeon R7 250). The recommended PSU is 400W, my PSU is currently 300W max. When I start the computer I get one beep than black screen. I've trouble shooted for the past 5 hours. I'm pretty sure this is a PSU issue but have also read that it should still run. Any help would be greatly appreciated!

System info
ACER
Aspire TC-603
Processor- Intel(R) Core(TM) i5-4460 CPU @ 3.20GHz (4 CPUs), 3.2GHz
RAM- 8 G
1TB hard drive
PSU- FSP Group inc
AC input- 100-127/220-240V-, 7/3.5A.60/50Hz
DC output- +12V1 +12V2 +5Vsp -12V
14.0A 16.0A 2.5A 0.3A
284W max
Total output- 300W

http://www.fsp-group.com.tw/index.php?do=proinfo&id=110 this is my PSU