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I've been trying to fix a desktop pc which doesn't heat up the processor (not getting connection to) during boot up/pressing power on button. This has occurred before and removing all components and adding them again has fixed it twice but I need to know what might be causing this or which part/s may be faulty and prevent it from hapening again. The processor is a Intel p4 2.8 Ghz. Motherboard: Intel Desktop Board D865GSA
When the system isn't working, when pressing the power button, the fans rotate but the system turns itself off after a couple of seconds. I tried removing the heatsink and touching the processor but there doesn't seem to be any heat generation. I've tried other PSU once but it didn't help.
I suspect something on the mobo has malfunctioned or something. Any help would be appreciated?
EDIT: i'm not implying why the processor isn't heating up if the mobo is running. I'm asking what might be stopping the connection to the processor to stop it from running in the first place.
2'Heating up' isn't a good indication of anything. Are there any other issues? Bios error messahes or beeps for example? – Journeyman Geek – 2014-10-31T07:03:04.917
processor does have to heat up for the system to work. That is why computers need heat sink. My problem is that it isn't doing so. – Niroj Manandhar – 2014-10-31T07:05:01.550
4You're mixing up cause and effect. The processor produces heat because its working. Usually issues with systems have other symptoms - the POST is meant to catch those. Your problem is unlikely to be due to lack of heat production, and usually your system wouldn't heat up that fast/ – Journeyman Geek – 2014-10-31T07:06:02.630
sorry, i'm a little confused. the system doesn't boot to bios, and no beeping sounds too. I'm just asking what's the cause of this. – Niroj Manandhar – 2014-10-31T07:08:32.327
I'd do a visual inspection of capacitors for bloating - look up capacitor plague. The system is older (and about the right age) to be a victim of this, and it may cause your system not to boot. Nonetheless, your computer is not producing heat cause its not running, rather than not running cause it isn't producing heat. Your computer is not a steam engine. – Journeyman Geek – 2014-10-31T07:11:00.803
I do know that. I never said it was. I asked what is causing for the processor to not heat up, and Not why the system is running but the processor isn't heating up. Thanks and sorry for the confusion – Niroj Manandhar – 2014-10-31T07:14:40.650
1Heat gets generated because the processor has an electrical resistance. If it really doesnt heat up, it doesnt get an electrical current. I'd check capacitor rot and the voltage of your PSU output. Maybe the PSU has gone bad. – agtoever – 2014-10-31T08:06:41.530