should i upgrade my 450 watt smps to 600 watt?

[artoo7]

My desktop has 2 internal sata hdd (1tb+2tb), 2 2gb ram, 1 sata dvd player, 1 1tb external hdd, intel 3rd gen dual core processor, 2 cabinet fans (12 volt each) and 450 watt smps. since few days my pc is not turning on properly, so i unplugged 2tb internal hdd, 1tb external hdd, dvd player, 2 fans, only internal 1tb is connected and now my pc working fine. should i upgrade my smps to 600 watt from 450 watt?

 

[Nuckles_56]

Have you tried plugging the unplugged devices back in until the PC stops working again, as there is no reason that a 450W PSU is unable to power your system, as it would be drawing about 150-160W at the most, suggesting that it is something that you unplugged from your computer that is the problem.

Also, can you list the make and model of your PSU