Here is my present setup:

AMD Phenom II X2 550 @3.10 Ghz

Gigabyte MA74-GMT-S2

XFX ATI Radeon HD 4350

1 500GB Seagate HDD

1 x 2 GB 1333Mhz DDR3 RAM

1 Optical Disk Drive(DVD/CD RW)

4 USB devices on average

 

Now the problem is when i am in desktop mode the PC runs just fine but when i start playing games i am able to play them for like 15 mins(1 map on average) and then *phoof* the PC shuts down automatically.

Earlier i had a 500W malfunctioning overheating Power supply(frontech) so i replaced it with a 450W Frontech power supply. So do you thing reducing Power by 50 W could be the cause ?

could be not enough power or something is overheating in your computer

could be not enough power or something is overheating in your computer

No overheating for sure it works at around 38 degrees

please could somebody verify,,,,

Googled this site....

http://www.extreme.outervision.com/PSUEngine

Giving me around 235 minimum and 285 W recommended..

38 degrees on every pc component?

Well no... the case shows 38 degrees maybe max 45 degrees not more than that(on the GPU of course)

I had a similar problem. I cleaned the dust inside my computer and everything was fine.

I doubt it's PSU issue, that PC can't take nearly 450W.

 

I have i5, HD5870 and 8GB RAM, and it doesn't take 450W.

'frontech', sounds really awesome

Buy a proper PSU.

"I had an issue with a frontech psu so I replaced it with a frontech psu"

that's all I got form your post and it's enough.

"I had an issue with a frontech psu so I replaced it with a frontech psu"

that's all I got form your post and it's enough.

Well the earlier one came with the case and had overheating problems..... but this one dosent have those problems..... (also i had my Botherboard replaced) since it was in Warranty.... so could that be the problem.. ?

I had a similar problem. I cleaned the dust inside my computer and everything was fine.

And yes i cleaned my PC thouroughly.....(i vaccumed it)

like what they said, that PSU was suspicious.

 

there's only ~250W(unstable) power that you can get from those "generic 500W PSUs", so think of it how much that 450w same brand replacement can give you. and so did it's +12V rail amperage.

those 4000 series cards are power hogs compared to the new ones that we have to date. you need a clean/continuous 300W of system power at-least to run that card effortless.

 

get a decent PSU