PC doesn't bootup

[Roshannn]

Hi
I have build my own PC, all the parts are in perfectly and everything is connected right
It turns on, fans running and everything but it doesn't boot or goes to the BIOS screen.
I have tried EVERYTHING.
Yes I tried this; http://www.tomshardware.com/forum/261145-31-perform-steps-posting-boot-video-problems
All of them didn't work.
All the parts are NEW.
BTW these are the parts

 

[ModernWarfare]

have you installed windows?

 

[Roshannn]

have you installed windows?

Yes I have installed windows on the HDD

 

[ModernWarfare]

Tier 4 - Not Recommend for stressful situations. May not be able to put out full rated power above room temperature, and may slightly fail to meet ATX specs.

Aerocool<--------You're answer. this 450 watt is to low not only its low the psu is cheap and cant handle these specs.
Asus Atlas
BFG 1000 watt
Cooler Master eXtreme (only use 75% of labeled wattage)
Cooler Master GX (except 450w)
E-Power
Futurepower
Hale82n 650w
Hiper Type-M
HIPRO
Masscool
MGE XG
Mushkin HP
NorthQ 4775-500S/BU
OCZ Modstream (if manufactured before December 2007)
OCZ GameXStream <1000 watt (if manufactured before December 2007)
OCZ StealthXStream (if manufactured before December 2007)
OCZ GameXStream 1010 watt (essentially a 850watt power supply)
Scythe Kamariki
Sigma Shark
Sintek
TTGI/Superflower
Ultra Xfinity
Ultra X2 <less than 700 watt
Ultra XVS
Xion Real Power PowerReal

 

[Roshannn]

Tier 4 - Not Recommend for stressful situations. May not be able to put out full rated power above room temperature, and may slightly fail to meet ATX specs.

Aerocool<--------You're answer. this 450 watt is to low not only its low the psu is cheap and cant handle these specs.
Asus Atlas
BFG 1000 watt
Cooler Master eXtreme (only use 75% of labeled wattage)
Cooler Master GX (except 450w)
E-Power
Futurepower
Hale82n 650w
Hiper Type-M
HIPRO
Masscool
MGE XG
Mushkin HP
NorthQ 4775-500S/BU
OCZ Modstream (if manufactured before December 2007)
OCZ GameXStream <1000 watt (if manufactured before December 2007)
OCZ StealthXStream (if manufactured before December 2007)
OCZ GameXStream 1010 watt (essentially a 850watt power supply)
Scythe Kamariki
Sigma Shark
Sintek
TTGI/Superflower
Ultra Xfinity
Ultra X2 <less than 700 watt
Ultra XVS
Xion Real Power PowerReal

Alright, Thanks.
I will try this
But what about this, I remove my videocard and turn it on. It still doesn't work. Still too low?
Anyways I should send the powersupply back then and get a better one

 

[ModernWarfare]

yes the psu may be damaged already return it and get corsair,seasonic,xfx,evga,antec,silverstone.

 

[Roshannn]

yes the psu may be damaged already return it and get corsair,seasonic,xfx,evga,antec,silverstone.

Is this 1 good?
Antec High Current Gamer HCG-520M, 520 Watt

 

[ModernWarfare]

yup. that should do just fine .