Please help with a hardware problem

[pesmerga12]

Hi looking for some help on how i can stop or at least lessen how often it happens.My Pc runs fine for videos and everyday use but when i play games the pc will cut out and require me to remove the power cable from my psu for about 30 seconds before it will boot back up.

The specs of my pc are higher than that required for the games im playing but unless i turn the graphics to minimun this will happen after an undetermined time. Obviously i lose my progress and its a pain. Im strapped for cash so cant really afford to replace anything at the moment but hoping someone canoffer me some suggestions on how to lower the chances of it happening.I currently play Pillars eternity 2,Battlefleet gothic 2 and Warhammer total war 2

Operating System
Windows 10 Pro 64-bit
CPU
AMD FX-6300 29 °C
Vishera 32nm Technology
RAM
12.0GB Dual-Channel DDR3 @ 803MHz (11-11-11-28)
Motherboard
Gigabyte Technology Co. Ltd. 970A-DS3 (CPU 1) 33 °C
Graphics
HW191D (1440x900@60Hz)
2048MB ATI AMD Radeon HD 7800 Series (ATI AIB) 38 °C
Storage
58GB SanDisk SDSSDP064G ATA Device (SATA (SSD)) 44 °C
55GB DREVO X1 SSD ATA Device (SATA (SSD)) 32 °C
298GB Hitachi HDT721032SLA360 ATA Device (SATA ) 39 °C
Optical Drives
No optical disk drives detected
Audio
AMD High Definition Audio Device

 

[pesmerga12]

Sumvision Power X3 PRO 800W Power Supply 800 Watt ATX PC PSU 20+4pin 6Pin PCI-E


I ran prime95 and it settled at 56c

Then ran furtest and it crashed within 30 seconds

 

[pesmerga12]

Im basically just looking for any quick fixes or temporary measures would unplugging devices or disabling features anything work? Cant afford a new psu for a month or two

 

[pesmerga12]

Corsair 650 Watt VS650 ATX PSU would that be any good