Solved what could be the defective component

[nfsworldrace]

i have my cpu for about 5 years and ine day after cleaning inside its component majorly by removing all of its connectors ram
processor hdd to the motherboard and cleaning them after i cleaned them i placed them back (i know that all of them are properly connected to thier right places).
then after i turned it on the startup screen hang (before the windows start up) and i smell somehing burning inside the cpu...it didnt really burn but it smells burned
after powering on again no displayed showed up

i got no spares and i wanna know what component needed to be replaced before buying one
if something more details to ask me go ahead

pls help me guys

btw my specs
intel pentium d 930 3.0ghz
512mb ddr2 533mhz ram
80gb sata II seagate
via p4m...mobo
i have no gpu/vcard installed
not sure if its true rated or not

 

[TVeblen]

Wish I could answer your question they way you want, but I can't without being there and seeing/smelling everything.

When you take apart a PC (Personal Computer) you must be very careful to avoid static electric shock. This can damage electronic components. You must always use good static precautions when handling the components.
If you did not then any one of the parts could be damaged.

Also, when cleaning inside a PC you must continue to use static precautions. It is OK to vacuum, but you should only use the plastic attachments and never the metal part of the vacuum hose.
It is much better and safer to blow out a PC using compressed air. Far less possibility of static damage.

For now you will need to test each of your components individually. This can be difficult if you do not have spare parts lying around. Sometimes it is better to bring it in to a repair shop.

Did you remove the CPU (Central Processing Unit - "Processor"), and/or the Processor fan?
If so, did you reinstall it using thermal compound between the fan and CPU?

 

[nfsworldrace]

uhm yes i didnt scrap off the thermal grease it still remains there

 

[TVeblen]

Normally if you remove the CPU fan from the CPU, you reapply new thermal grease before reinstalling the fan.
If you removed the CPU and fan together but never took the fan off, then it should be OK.

If you run a CPU with poor cooling due to a thermal grease issue it will overheat very quickly. But normally it will shut itself off before any damage can be done.

 

[nfsworldrace]

i didnt apply a thermal grease but it never shut it self down and as i know theres a config in the bios which if that heat lvl is reached by the cpu it will shut itself down....but it didnt shut down means the processor didnt over heat

btw shut down temp is 70c as i remember and 60c where it starts to beep

 

[TVeblen]

Unfortunate. That would have been an easy fix.

 

[nfsworldrace]

so what could be the problem

 

[TVeblen]

I think you damaged one of the components. Possibly the motherboard itself. Please see Post #2.