Solved Is my cpu dead

[nfsworldrace]

i checked my processor and it has a burnt mark. the issue is that when i turn on my pc the screen shows black screen but cpu has power and led lights are on but i see on my reset led is not blinking just steady light on.
what could be my problem is it a mobo, psu or processor

ps: before it didnt work i smell a smoke from my system
and i dont have a gpu

 

[nfsworldrace]

this is the picture of my processor burn mark would it be fine and still working?

 

[lopploio]

If your not getting a picture and you said you have dedicated graphics something went very wrong then. Burn marks aren't normal.

 

[ShamrockRig]

Well as stated above, Burn marks are 100% a sign of something not quite right, the fact that it's a pentium D, single core and is probably older than me i'd take a guess and say that it's probably dead given the factors you've given.

 

[nfsworldrace]

Some said its just hsf oxidation and normal. O think the beat solution is to try to a new mobo but dont want to waste money for no use at all

 

[ICIT2LOL]

Actually it looks very strange for a burn mark as the core is around a sixth of the total area size of the heatsink above and it looks to me to be "W" shaped which makes me think yes it has got hot but the compound has left burnt on debris on it.
If it were the core one would expect more of a blue overheated mark/s around the peripheries of the silicon chip I cannot get a pic to attach so just go here and see https://www.google.com.au/search?q=...view%2F9794%2Fcore-duo-on-the-desktop;600;594

 

[nfsworldrace]

So do you think it will still work and runs fine? I cant tell it because my psu or mobo broke down

 

[ICIT2LOL]

Now you can test the PSU quite easily with a digital multimeter in your case (no pun) because if the machine would run then there is an excellent piece of software called HW Info that is brilliant at diagnosing the rail voltages.

So if you are careful use the meter to read the volts on the 24 pin plug on the board use any black cable as ground (negative) and the red lead goes to each of the coloured cables to see what they are - see this for what the volts should be. Now anything that is +/- 5% of the stated voltage is bad.
Power supply unit (computer - Wikipedia, the free encyclopedia)
Here there is a great reference Voltage Rails - Power Supply 101: A Reference Of Specifications
The meters can be bought for just a few dollars and come in very handy anyway.

Your CPU well I would suggest trying a CPU that will be compatible with the board but that is up to you really and they can be got for very little these days but you take the chance of course of getting a dud .

 

[ICIT2LOL]

Now you can test the PSU quite easily with a digital multimeter in your case (no pun) because if the machine would run then there is an excellent piece of software called HW Info that is brilliant at diagnosing the rail voltages.

So if you are careful use the meter to read the volts on the 24 pin plug on the board use any black cable as ground (negative) and the red lead goes to each of the coloured cables to see what they are - see this for what the volts should be. Now anything that is +/- 5% of the stated voltage is bad.
http://en.wikipedia.org/wiki/Power_supply_unit_(computer)
Here there is a great reference http://www.tomshardware.com/reviews/power-supply-specifications-atx-reference,3061-2.html
The meters can be bought for just a few dollars and come in very handy anyway.

Your CPU well I would suggest trying a CPU that will be compatible with the board but that is up to you really and they can be got for very little these days but you take the chance of course of getting a dud .

 

[Golden]

what could be my problem is it a mobo, psu or processor

Do you see any bulging capacitors on the motherboard?

 

[nfsworldrace]

No i dont see any bulging capacitors. Anyway can this happen to solid capacitors?

 

[AddRAM]

Devlin, a Pentium D is a dual core.

nfsworldrace, you can get another Pentium D for $1 if you look.

Chances are if you hurt the cpu, you hurt the motherboard too

 

[badcrc]

Now you can test the PSU quite easily with a digital multimeter in your case (no pun) because if the machine would run then there is an excellent piece of software called HW Info that is brilliant at diagnosing the rail voltages.

So if you are careful use the meter to read the volts on the 24 pin plug on the board use any black cable as ground (negative) and the red lead goes to each of the coloured cables to see what they are - see this for what the volts should be. Now anything that is +/- 5% of the stated voltage is bad.
http://en.wikipedia.org/wiki/Power_supply_unit_(computer)
Here there is a great reference http://www.tomshardware.com/reviews/power-supply-specifications-atx-reference,3061-2.html
The meters can be bought for just a few dollars and come in very handy anyway.

Your CPU well I would suggest trying a CPU that will be compatible with the board but that is up to you really and they can be got for very little these days but you take the chance of course of getting a dud .

note - this psu voltage measurement won't work if the ATX 24 pin is pulled off the mobo for testing. In that situation, you have to short the green PS-ON to ground to soft switch the psu. I wouldn't recommend this procedure to the inexperienced (too easy to short the wrong pin).

 

[Berton]

No i dont see any bulging capacitors. Anyway can this happen to solid capacitors?

Capacitors are usually layers of foil and paper with an electrolyte solution in them. There were manufacturing problems in the plant/s making them some years ago that cause the bulging and/or leakage but haven't seen the problem in computers of the last few years, maybe the supplies have finally been refreshed and the issue no longer exists. It could also happen in power supplies. I haven't had to junk a computer because of the problem in the couple of years. Replacing a motherboard may be less cost-effective than getting a new computer if a board that will accept your CPU and Memory may not be available.