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I am in need of help. I've had my Medion 5100 pc for a year and a half. I don't know if anyone else who has this PC has this problem but the CPU fan on this PC is very very very noisy! A few months ago I bought a generic Pentium 4 CPU fan. It fit on my motherboard just fine but when after installing it and turning the PC on it shuts off after about 10-15mins of usage. I really want to change this fan.. its too loud and annoying! Anyone have any suggestions? Thanks
The cpu fan must have enough cfm (air moving) capacity to properly cool the heatsink and cpu. If that is inadequte the cpu will eventually overheat, and on many mboards when it gets too hot the mboard will shut down (depending on settings in the bios Setup) - it sounds like that's the case with the replacement you bought. A rough rule of thumb is the replacement should be the same physical size or larger (thicker, higher), and the milliamp or wattage rating of the replacement should be at least as much as the original one.
If you're not sure what fan to get, take the old one off and show it to someone at a computer parts place, and/or tell them what cpu type and cpu speed you have. A smaller place that builds custom computers and has a lot of computer pieces is more likely to have better prices.
On some mboards you must use a three wire fan and connect it to the the proper cpu 3 pin fan header - if there is no 3 wire fan connected to that header the mboard may shut down shortly after you boot.
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"It fit on my motherboard just fine but when after installing it and turning the PC on it shuts off after about 10-15mins of usage."
Apparently you didn't install it correctly, the CPU is overheating & shutting down to protect itself. Remove the HSF, thoroughly clean the bottom of it & the top of the CPU with solvent such as alcohol or acetone, reapply the thermal paste of your choice, then reinstall the HSF. You certainly don't have to use Arctic Silver, but their instructions are excellent:
http://www.arcticsilver.com/arctic_silver_instructions.htm
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If you replaced both the heatsink and fan, that was a mistake and Jam's post is probably correct.
Replacing just the fan is much easier and safer.
Sorry, I do not check for private messages
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maybe you turned the fan the otherway around so its sucking and not blowing the hot air out...
ATi Radeon 9600 PRO
AMD Athlon 64 3700+
Gigabyte K8NSC-939
1Gb Team Group DDR400
Maxtor 200Gb
450 Watts PSU
4 vents
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The fan must blow towards the heatsink in other words - the fan blades facing up, not the central support structure for the fan up.
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Thanks for the suggestions guys. The replacement I bought was a fan & the heatsink together. Another thing that I forgot to mention is that Medion attached like this hollow, cylinder-funnel shaped tube to its CPU Fan/heatsink and this tube is long enough that it almost touches the computer case's lid and there's an airvent in that spot. So, as you can see its a complicated situation b/c when unistalling the fan/heatsink, the "airflow" tube goes along with it.
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The tube just helps funnel air from outside the case directly to the cpu because it's likely to be cooler air than air inside the case. It isn't essential in most cases unless you are overclocking the cpu or have a heat problem within the case, so if it doesn't fit (is too long) in the case, or it's in the way all the time, you can take it off.
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I had the same exact problem on my Medion laptop. I ended up having a "somewhat like" Toshiba fan sent to me from Malaysia for about $60. It didn't fit quite well, it had to be sanded down. It was fixed though. Whatever you do, if you get a Medion, don't leave it on all day.
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