Why my PC switches off automatically?

[xav_jude]

My Pc switches off automatically. The technician replaced fan in the CPU unit a few months ago but its still getting switched off. Now the technician is saying that it's a hardware problem and need to replace the hardware inside the CPU. Whether I need to buy a new hardware for Rs 2800. Can any one help me.

My PC is 6 yrs old. OS is Windows XP

 

[Emerald]

how old is the PSU?

how long does the computer stay running?

 

[IAreKyleW00t]

That's most likely the Power Supply starting to go bad.

 

[xav_jude]

BIOS setup CPU readings:
System temp = 33 degrees Celsius
CPU temp = 48 degrees Celsius
CPU Fan speed = 2708 RPM
CPU Vcore = 1.37V
3.3V 3.44V
5.0V 5.16V
12.0V 12.09V
Battery voltage = 3.44V

Is this the PSU problem.

 

[IAreKyleW00t]

Everything seems normal in the BIOS. From what I understand 6 years on the same computer with no upgrades or repairs. That's most-likely to be the Power Supply going bad. You need to replace it soon; in some cases it can surge out and fry everything (from what I've read/seen).

If that's still not the problem then it's the CPU or Motherboard starting to give out. Either way, you can order a pretty cheap Power Supply from Amazon or Newegg. I would recommend a 250W to 300W power supply for a normal; everyday use computer.