Cooler Master thunder 450w psu problem

[Fu11meta1]

So i upgraded my PC 3 weeks ago. Specs-
i3 3220
4gb x2 corsair vengeance ram
Zotac 750 ti 2gb gpu
Gigabyte h61m-hd2 mobo

and CM thunder 450w psu

I upgraded gpu and ram only.
After 2 weeks of usage. My psu is not working now but it was on warranty so i gave it to service center for repair.

I want to ask is this because i upgraded my gpu that my psu is not functioning properly or what?

I'm afraid that even After getting psu repaired, it will stop working after few weeks.

 

[bignastyid]

The psu is low quality. I would suggest upgrading to a higher quality unit, the lower the quality the high the chances of it damaging other hardware.

 

[Fu11meta1]

REALLY? I already upgraded my pc few weeks ago. i can't buy anything now
Can i use for like already 4-5 months? Without damaging my other components?
My RAM and GPU are brand new so i don't want them damaged

 

[Fu11meta1]

Help

 

[bignastyid]

It might last 4-5 months or it might last 4-5 minutes. The lower the quality the psu the higher the probability of it damaging something when it fails.