My screen just got freeze and blackout when play games after upgrade to Powercolor R9 270

Gyn Lam

Commendable
Jan 26, 2017
2
0
1,510
My Current Rig before upgrade GPU:
CPU: Core I3-4160
Mainboard: Asus H81M-D (Lastest BIOS)
GPU: Gigabyte HD6670 2GB DDR3
Ram: G.Skill Ripjaw 2x4GB 1600Mhz DDR3
HDD: 1 Seagate 80GB 5400 Rpm Sata2 & 1 Toshiba 500GB 7200 Rpm Sata3
PSU: Thermaltake 450W Litepower
Mouse And Keyboard: Office one !
I've used Furmark to stress test my R9 270 about 20 min (1280*1024 8x AA) (nothing happen)
But when i play games (Brother In Arms, LOL, GTA 4 EFLC etc) (Especially LOL when turn off Vsync) my screen just keep get freeze and blackout frequently)
When i press the (Ctrl Alt Del) key to open Task Manager, it work fine, and in the first tab my game is "Not Responding" (My previous HD6670 operate normally) !
Please help !