Due to the no signal crashes I've been getting I got a new PSU delivered today. Yesterday I made a couple of calls to OCUK and two different gent's told me that a Vega AIO will be fine with a good quality 750 watt or above PSU so I ordered a Corsair HX 850 which is a Platinum rated model, I paid extra for a Saturday delivery and it came early which was great, I spent an hour taking the PC apart and fitted the new PSU. I then turned the PC on and loaded a game, Within two or three minutes I got a no signal crash forcing me to reboot the PC, I then booted up and tried two different games and got the same result with both, a no signal crash forcing a reboot. I obviously got a dud. I phoned OCUK and as expected can't get it replaced due to a lack of stock so I'm getting a refund. I suppose I'll just have to wait for stock levels to improve. I'm still planning on getting a Vega so I'm going to keep the psu they delivered today.