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Thread ID: 116775	2011-03-19 18:10:00	Ok Seriously how harmful is it to leave your PC	mark1978 (13845)	Press F1

Post ID	Timestamp	Content	User
1187541	2011-03-20 19:33:00	Most of the damage is done to electronic circuitry on power up. Yes this theory is mentioned often. I turn mine off at night. Perhaps I will get some degradation of components over time for doing so but who cares, I'll have changed parts long before then. Also, do you leave your car running all the time? Saves on startup wear you know.	pctek (84)
1187542	2011-03-20 20:03:00	I blew out the fans this morning before turning it on, after all the dust was out I turned it back on . . . same thing, makes noise, then after 20 to 30 sec its gone, am convinced its the CPU fan . . Don't guess - find out . Stop all fans, one by one, except CPU fan, and see if the noise stops . Power supply - poke a pencil or other thinnish stick through grill to stop fan . Change noise? Use your finger to stop other fans . If noise doesn't stop, bingo, it is the cpu fan for sure .	linw (53)
1187543	2011-03-20 20:04:00	I blew out the fans this morning before turning it on, after all the dust was out I turned it back on... same thing, makes noise, then after 20 to 30 sec its gone, am convinced its the CPU fan.. Disconnect CPU fan and try again, so long as you only do it for a short duration, WITHOUT SIGNIFICANT LOAD, it won't cause damage. Surely with the case open you can hear where the noise is coming from? Could be your chipset fan too.	Cato (6936)
1187544	2011-03-20 20:35:00	We have a 10-ish year old Pentium 3 server at work we just decommissioned. It had never been turned off... and it's still going strong (as a NAS now)!	jwil1 (65)
1187545	2011-03-20 21:09:00	Wow, 10 years and still running is very good! I have been seriously thinking about leaving it running 24/7, one reason for this is this fan that makes the noise.. I will find out which one it is, thanks for the advice how to do this.	mark1978 (13845)
1187546	2011-03-20 21:13:00	Personally I would not stop the CPU fan during your investigation if I were you.	Snorkbox (15764)
1187547	2011-03-20 21:27:00	Don't guess - find out . Stop all fans, one by one, except CPU fan, and see if the noise stops . Better to jam the fans before starting the PC up, then let them start one-by-one . Sticking a hard object into the path of a fast moving plastic fan may well snap a blade off . THEN you will have more problems than just an annoying noise . Start with the CPU fan as it's the most critical .	Agent_24 (57)
1187548	2011-03-20 21:37:00	Yes this theory is mentioned often. I turn mine off at night. Perhaps I will get some degradation of components over time for doing so but who cares, I'll have changed parts long before then. Also, do you leave your car running all the time? Saves on startup wear you know. Not so much a theory as an accepted property of electrical devices. Largely to do with inrush current. As a simple example we almost all should have experienced when does a light bulb blow ? Almost always when we switch it on. Not really the same thing as a car, but yes they do wear more during startup as well. Thye truth is though wether you switch it off daily or leave it running 24/7 it should still last long enouogh to become obselete say 3-5 years minimum	dugimodo (138)
1187549	2011-03-21 00:32:00	The truth is though wether you switch it off daily or leave it running 24/7 it should still last long enouogh to become obselete say 3-5 years minimum this is the only fact here that isnt based on speculation & old wives tales :punk :punk :punk Who here leaves there $2000 TV on 24/7, their car, stereo (some do) same arguments apply (more or less) more PC components start to fail when the thing is up & running than at turn on. Its just the symptoms often show at turn-on.	1101 (13337)
1187550	2011-03-21 01:02:00	Why do some devices (especially SMPS) have slow-blow fuses? because they have to withstand normal high current surge at startup. Higher current = more stress It's not all electrical, filaments in lightbulbs, CRTs and other valves expand when warming up, mechanical strain is added. Older hard drives that park the heads on the platters will wear faster if spinning up and down all the time.	Agent_24 (57)
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