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HELP! CPU goes 100% when i play games or when i open many programs and strange noise starts

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May 2, 2013 3:22:11 AM

After i installed a new motherboard when i start a game a strange noise starts from computer and my game fps drops dramatically,when i press ctrl alt tab i see that my cpu goes 100%,If i press alt tab sometimes noise stops and my pc stops lagging.This LAG also happens when i try to open many programs at once.I don't think it's because of system requipments because it didn't happen before i changed motherboard.I tried everything like installing more ram,changing my power supply or cleaning my pc from dust.I think it is broken hardware problem but i don't know which one got problem. I bought a new big Coller:Corsair A50 and i placed another case fan on top of it and made it like sandwich hoping to cool it more but still nothing happens.When i go to BIOS i see that my CPU temperature is 27 oC and my motherboard 35 oC,i don't know if it raises when the strange noise starts.

P.S It don't lag on every game for example it doesn't lag on age of mythology ,NFS most wanted 2005 or League of legends but it lags on minecraft which got more shitty graphics and many other games.

system requipments:
CPU:Intel(R) D Pentium CPU 3.00Ghz 3.01Ghz
System:Microsoft Windows Xp Service pack 2
Ram:1GB ddr3
Motherboard:p 5G41T-M LX
Graphic Card:Nvidia Geforce 9500
Power Supply:300watt 2000rpm
Coller:Corsair A50

a b K Overclocking
a b V Motherboard
May 2, 2013 3:35:14 AM

make sure nothing is hitting the fan blades and the fan on the GPU is spinning properly. the noise is most likely a fan noise so try taking off the side panel and listening for the noise to find where it is coming from.
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a b K Overclocking
a b V Motherboard
May 2, 2013 3:54:24 AM

you check thru bios, that is a no-load situation, check your temps when on full load.
note that you have a pent D, that is notorious for being hot. You changed boards, maybe it's you hsf not seated properly, or too much thermal paste.
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a c 81 K Overclocking
a c 99 V Motherboard
May 2, 2013 10:13:33 AM

Did you reinstall Windows when you got the new mobo?
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May 2, 2013 10:36:58 AM

bgunner said:
make sure nothing is hitting the fan blades and the fan on the GPU is spinning properly. the noise is most likely a fan noise so try taking off the side panel and listening for the noise to find where it is coming from.


I stopped my 3 main fans and the sound kept coming,i got closer to my power supply and the sound was bigger,i am 80%sure that annoying sound comes from power supply.Buy i changed power supplies in the past and that noise kept coming with the new power supply.maybe i should try changing it again?
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May 2, 2013 10:38:07 AM

Cons29 said:
you check thru bios, that is a no-load situation, check your temps when on full load.
note that you have a pent D, that is notorious for being hot. You changed boards, maybe it's you hsf not seated properly, or too much thermal paste.


If the problem won't stop by changing again my power supply i will try to place less paste because i think i used too much paste.

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May 2, 2013 10:39:33 AM

ihog said:
Did you reinstall Windows when you got the new mobo?


I reinstalled windows a lot of times but nothing changed.

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a b K Overclocking
a b V Motherboard
May 2, 2013 11:41:12 AM

b1l4r4s said:
bgunner said:
make sure nothing is hitting the fan blades and the fan on the GPU is spinning properly. the noise is most likely a fan noise so try taking off the side panel and listening for the noise to find where it is coming from.


I stopped my 3 main fans and the sound kept coming,i got closer to my power supply and the sound was bigger,i am 80%sure that annoying sound comes from power supply.Buy i changed power supplies in the past and that noise kept coming with the new power supply.maybe i should try changing it again?


Since you only have a 300W PSU I would change the PSU to a better higher wattage one. Corsair CX-430W would do well for your needs and is of higher quality at a cheap price.
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May 5, 2013 2:12:11 PM

bgunner said:
b1l4r4s said:
bgunner said:
make sure nothing is hitting the fan blades and the fan on the GPU is spinning properly. the noise is most likely a fan noise so try taking off the side panel and listening for the noise to find where it is coming from.


I stopped my 3 main fans and the sound kept coming,i got closer to my power supply and the sound was bigger,i am 80%sure that annoying sound comes from power supply.Buy i changed power supplies in the past and that noise kept coming with the new power supply.maybe i should try changing it again?


Since you only have a 300W PSU I would change the PSU to a better higher wattage one. Corsair CX-430W would do well for your needs and is of higher quality at a cheap price.


There is one more thing that i forgot to mention,When the stupid electric noise starts and my cpu goes 100% i sometimes take the hair dryer and try to cool my pc and my cpu goes back to normal as well as the sound,when i stop the hair dryer it starts again...

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May 10, 2013 7:47:46 AM

I changed power supplies and i installed a 420 watt power supply but still the sound starts (a little different) and pc lags
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