PSU problem Help!

heatmikepark2

Honorable
Aug 26, 2015
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Zotac GTX 750TI
Intel core i5 650
intel dh55pj
Acer AL1716W
wd green 1tb
6gb kingston 1333mhz ram
550watts PSU

Screen frequently froze when kept idle for sometime. CPU fans are working fine along with dvd drive. Caps lock light does not works.Posting a video for better understanding. (please avoid the shitty music and shaky video).

My Engineer said that the problem is with PSU and you need to repair it so I did that, But since than problem has reduced but it is not completely gone.
I need to know weather this problem occurs due to PSU and if yes than please suggest one.

If possible use www.amazon.in to suggest one. Thanks in advance.
 

heatmikepark2

Honorable
Aug 26, 2015
85
0
10,640


Its a generic PSU from a company named Xtech. I am using that since 3 years and this problem never occurred to me.