Computer Randomly restarts now freezes

[serialklr]

Assalam u alaikum everyone. I will highly appreciate any feedback from you guys on my topic, plz help me [emoji22] .

Summary:
My PC shutsdown itself, ran fine for 2 weeks now again shutsdown or freezes. Now a spark occurred in mobo and I have not stated it again.

Details:
About two weeks ago my PC shutdown by itself while gaming (game has light graphics nothing heavy). After 5 seconds PC stared up itself. After logging into windows it again shutdown while on desktop. So I let my PC rest for few hours. I started it again it ran normal. I even ran GPUz render test to check if gpu is causing problem on load. But everything ran normal, temperatures were also normal. I even gamed for 4 hrs straight one day. After 2 weeks from first occurrence of problem, PC shutdown again today. After restarting it, now it started to freeze instead of shutting down. Meanwhile I managed to take some pictures of HW monitor and bios screens (URLs provided below)
So, I opened side cover for ventilation and to see if all fans (PSU, processor and casing fans) are running, they were all ok. I removed graphics card, switched RAM slots, removed DVD drive, tried 1 RAM only both one at a time, changed harddisk but problem remained.
Now when I started PC a spark came from a small black cube-like component in motherboard located near processor and PC shutdown. I have not tried staring it again.
So plz help me I identifying the problem.

Specs:
i5 2500
Asus p8h61 mle r2.0
Silverstone 600w bronze psu (SST-ST-60F-SG)
4gb Kingston 1333 ddr3
4gb Kingston 1600 ddr3
1TB Seagate hdd
HD 7850 1gb club3d

URLs of Pics:
http://imgur.com/Tl8NqhF
http://imgur.com/jzEg1VX
http://imgur.com/4dslcQH
http://imgur.com/y8vFSU8
http://imgur.com/0QJM33Z

below is the component I suspect where spark occured
http://imgur.com/ZIvLVfx

If it's Faulty PSU, is Corsair vs650 suitable replacement?

 

[iampasha]

Did you checked your processor heatsink if its seated properly?

 

[serialklr]

No I didn't, it has been in the same position for 2 years. I have never removed it since

 

[nafu]

you mentioned about Spark occured while running. have you seen that part of mobo where it touched or from where it sparked. coz spark means critical situation or no recovery unless repaired..

 

[serialklr]

you mentioned about Spark occured while running. have you seen that part of mobo where it touched or from where it sparked. coz spark means critical situation or no recovery unless repaired..

There are 2 Black cube-like components (capacitor perhaps) near the HSF of Processor. I think it was one of these two. see image plz
http://imgur.com/ZIvLVfx

 

[GloriousChicken]

PSU is choking.

 

[jack]

Do you have any surge protection? Do you have any burn marks on the board, if they are then its safe to say that you have a short on it.

 

[serialklr]

Do you have any surge protection? Do you have any burn marks on the board, if they are then its safe to say that you have a short on it.

I run PC on a 1KW puma servo stabilizer. Other than this no surge protector. The Mobo bios however states surge protection is on.
I inspected the area where I saw the spark on mobo, I could not see any visual signs of damage.

 

[serialklr]

Please recommend some good computer repair shops or reputable members of PG where I can take my PC to check and repair. Location near Gulshan-e-Iqbal, Karachi is preferred but I can also go to I.I. Chundrigar Road if I have to.

 

[GloriousChicken]

xxxxxxxxxxxxxxxxxxxx

 

[serialklr]

I heard you went there.
my friend was off today.
But you can come tommorow if you want.
I'll be there around 4pm. (Have some stuff to send back for warranty)

I haven't taken my PC for checking yet. Waiting for some recommendations from you guys. I don't want to get cheated by random shopowners.

 

[GloriousChicken]

I haven't taken my PC for checking yet. Waiting for some recommendations from you guys. I don't want to get cheated by random shopowners.

Very well then.

Suit yourself.

 

[goldendays2003]

Assalam u alaikum everyone. I will highly appreciate any feedback from you guys on my topic, plz help me [emoji22] .

Summary:
My PC shutsdown itself, ran fine for 2 weeks now again shutsdown or freezes. Now a spark occurred in mobo and I have not stated it again.

Details:
About two weeks ago my PC shutdown by itself while gaming (game has light graphics nothing heavy). After 5 seconds PC stared up itself. After logging into windows it again shutdown while on desktop. So I let my PC rest for few hours. I started it again it ran normal. I even ran GPUz render test to check if gpu is causing problem on load. But everything ran normal, temperatures were also normal. I even gamed for 4 hrs straight one day. After 2 weeks from first occurrence of problem, PC shutdown again today. After restarting it, now it started to freeze instead of shutting down. Meanwhile I managed to take some pictures of HW monitor and bios screens (URLs provided below)
So, I opened side cover for ventilation and to see if all fans (PSU, processor and casing fans) are running, they were all ok. I removed graphics card, switched RAM slots, removed DVD drive, tried 1 RAM only both one at a time, changed harddisk but problem remained.
Now when I started PC a spark came from a small black cube-like component in motherboard located near processor and PC shutdown. I have not tried staring it again.
So plz help me I identifying the problem.

Specs:
i5 2500
Asus p8h61 mle r2.0
Silverstone 600w bronze psu (SST-ST-60F-SG)
4gb Kingston 1333 ddr3
4gb Kingston 1600 ddr3
1TB Seagate hdd
HD 7850 1gb club3d

URLs of Pics:
Imgur: The most awesome images on the Internet
Imgur: The most awesome images on the Internet
Imgur: The most awesome images on the Internet
Imgur: The most awesome images on the Internet
Imgur: The most awesome images on the Internet

below is the component I suspect where spark occured
Imgur: The most awesome images on the Internet

If it's Faulty PSU, is Corsair vs650 suitable replacement?

Burnt IC. Mobo needs to be replaced. Thats it.

 

[GloriousChicken]

So did you try another motherboard? since the spark mark I believe its more than just one damage. An unstable voltage surge is very dangerous.

 

[serialklr]

I took my PC to 2 different shops, 1 in gulshan other in johar. It ran perfectly over there. One shop keeper was saying that maybe problem was due to the humid weather in Khi recently. Both advised me to use at as normal.
What should I do? Take it to someone else who can diagnose better or do you think i should keep using it until fault reoccurs?