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overheating i think (important)

By lthomas ·
My computer kept rebooting and getting error messages and everthing till i took the cover off the case and stuck a pretty nice fan by it and turned it on full blast no errors or restart, does this mean its overheating and is what is causes the errors and restarts. What do i need to do to get it to run like it is with the fan but without that big thing and i didnt mention that fan is loud lol?

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by TheChas In reply to overheating i think (impo ...

Could be that the CPU fan is undersized, or failing.

Here's what I would do.

Clean the case and all vents.

Verify that the CPU fan spins freely and that the top of the heatsink is not hot just after turning the PC off.
If the top of the heatsink is hot, you need a new higher air flow fan.

Check for other device fans and clean or replace as needed.
Chip-set (on the motherboard) Video, etc.

Make sure that the back of the power supply has open space to exhaust air from the case.

If you case allows, add a front and rear case fan installed to **** air into the case.

If your video card does not have a fan, consider installing a "slot" fan next to it.

Make sure that your cables do not block air flow over your RAM modules.


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by CG IT In reply to overheating i think (impo ...

in the not so distant past with AMD Athlon and XP processors the heatsink/fan [hsf] that shipped with the retail processors were 60mm and ran at at a whopping 5500 rpm to push 75cfm. They were screamers. Some outfits were selling acoustic noise dappening material to line computer cases to cut down the noise. Then some crafty hardware geeks made adapters for the HSF so they could mount 80mm fans. Pushed a lot more air at a slower rpm and reduced noise. That prompted HSF mfgs to come up with a heatsink that came stock with a 80mm fan.

You might want to check on the HSF assembly and consider a new one with a larger fan that pushes the same cfm but at a reduced rpm to cut noise.

Some have opted to mount 120mm fans and made acrylic ducting right into the heatsink. You'll see these types of cooling in Intel machines.

Last is water cooling.

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by HAL 9000 Moderator In reply to overheating i think (impo ...

As you didn't mention how long that this computer has been running I would also check that you can turn the CPU fan freely and that there isn't a large amount of Gunk built up under it preventing airflow over the Heatsink for the CPU.

I've seen one case where there was so much junk in the Heatsink that the fan was actually stripping out some of the dust that it had blown in. Of course by that time the AMD CPU had seen better days and had to be replaced so if you can clean things out before they reach that stage it will save you quite a lot of money.

Also if you can mount more case fans any that are blowing into the case should be filtered if at all possible to prevent dust and other stuff being sucked into the case where it can do a lot of harm.


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by 3xp3rt In reply to overheating i think (impo ...

Verify the BIOS settings.
How mutch is the temp. for warrning.
you can set this for 70?C.

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by willcomp In reply to overheating i think (impo ...

I agree with Chas and Col on this one.

Check fans for operability.

Clean case and air vents. Remove front bezel also. Usually a lot of dust bunnies under it.

Col may be on track about CPU heat sink being plugged. I see it often. Best way to clean is to remove CPU cooler, remove fan from cooler, spray heat sink with degreaser (409 cleaner) and flush with running water. Clean fan with a small paint brush. Reassemble and re-install. Be sure to clean old thermal compound off and apply new compound on heatsink.

Since I stock replacement fans and CPU coolers, I clean the whole thing, fan and all, with degreaser and sprayer mounted on hose. My shop has an old beautician's sink. Very handy.

Dry with a hair dryer and re-assemble. Have ruined one fan in last 10 years.


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by clarkhans In reply to overheating i think (impo ...

I have had a few overheating problems, some because of bad case design, some were made for the smaller cpu's in mind, and used to upgrade to faster systems. Check that the fan in the psu is going the right way, out of the case and not inwards (yes, I had one!) Check the clip holding the cpu down is not broken and that it is tight, making sure you disconnect the power to the computer before entering. If you feel competent enough remove the cpu and clean off the old thermal compound and apply a good quality silver paste. As for the fan noise, you can buy a better, quieter, more efficient one for a relatively small sum these days. There can be other issues like overclocked cpu's, so that is worth checking as well, but this should do for starters!

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by wlbowers In reply to overheating i think (impo ...

You should be able to go into bios and check the temp of the cpu, mb as well as the fan speed.

If the cpu temp is high, check the fan speed first. Then check the fins of the cpu heatsink. If you don't see fins or you see dust on the cpu fan or fins, use can air and qtips to clean them off.

The two above problems are the most common for cpu overheating.

Good Luck


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