Do you know the make and model of your motherboard? Most boards with a 775 socket should have those 4 holes into which the 4 legs of the heatsink/fan fit. They usually use push-pins (not screws), and they should just snap into the holes without too much force.
If you know the make/model of your mobo you can find out what type heatsink it supports. But the main thing is, YES, I would definitely think only having 3 screws would cause the heatsink to not cool the CPU. Those 2 metal surfaces have to be perfectly flat and tight against each other for the paste to do its job. Having only 3 pins would raise one corner of the fan off the CPU surface - and probably cause overheating. This vid shows a guy installing a heatsink with pushpins (it's about 3:20 into the vid). http://www.youtube.com/watch?v=orp58URhQtg But knowing the make/model of the mobo would help figure out what's going on. Good luck, Donk On 4/8/2011 7:08 PM, kevin19_89 wrote: > while back i bought a new CPU fan from bestbuy > http://www.bestbuy.com/site/Rocketfish%26%23153%3B+-+Universal+CPU+Cooler/9462609.p?id=1218108988702&skuId=9462609 > > got home it would ALMOST work. my motherboard cpu heatsink has screws on the > heatsink you push down and screw down. the one i bought had clips that you > just pop in so it wouldnt work (both are socket 775) > > i have cleaned all thermal paste off and replaced with arctic silver 5. i > have cleaned the motherboard and all heatsinks with compressed air. bought a > new exhaust fan and done everything i can think of. computer all of a sudden > jumped up to 148 degrees and will NOT go down. took video card out and used > built in one and still wont go down. i need help before it burns up now. im > > way mine screws in is kind of like this (has the same screw holes on board > (one of them are missing also and i hope that isnt causing the overheat). > this is the one im talking about > http://www.bestbuy.com/site/Cooler+Master+-+Hyper+212+Plus+CPU+Cooling+Fan+with+Heat+Sink/1510328.p?id=1218265765346&skuId=1510328 > > > > ------------------------------------ > > If you have any questions or problems with any aspect of this site, please > feel free to contact me directly [email protected] Please do not post > personal issues directly to the group. > > To unsubscribe from this list, send an email to > [email protected] > > Thank you for using A-1 Computer TechYahoo! Groups Links > > > > > > Internal Virus Database is out of date. > Checked by AVG - www.avg.com > Version: 8.5.426 / Virus Database: 271.1.1/2692 - Release Date: 02/16/10 > 19:35:00 > [Non-text portions of this message have been removed] ------------------------------------ If you have any questions or problems with any aspect of this site, please feel free to contact me directly [email protected] Please do not post personal issues directly to the group. To unsubscribe from this list, send an email to [email protected] Thank you for using A-1 Computer TechYahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/A-1-Computer_Tech/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/A-1-Computer_Tech/join (Yahoo! ID required) <*> To change settings via email: [email protected] [email protected] <*> To unsubscribe from this group, send an email to: [email protected] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
