hMM OK brothers Thx for a good piece of advance. I want to know 1 thing more. Does overheated pc (liek mine sadly) is slower then normal. I notice my GTA4 is laging even on low setting. B4 it work like charm on High settings.

I build it myself

In cpu-z it shows your running at 1995mhz. With the temps your posting id imagine your pc always runs at that speed and never goes up to the 3Ghz it should.

Its running at 1995mhz coz intel speedstep is not disabled.

Yeah but its supposed to go up to 3Ghz when you do something like play a game. But in your case id think it wouldnt or at least wouldnt stay there for long as your so close to max temp already that it would throttle your performance so as to avoid damaging the cpu, getting blue screens of death, crashes etc.

@stew: There were too much dust stroms in my city.
See here Saudi Arabia’s Giant Sandstorm | Shareordie

After this strom i didnt clean my pc. So cleaning pc will solve sensor problems?

WOW. If i was you id move .

But anyway you should clean out your pc just to make sure. Make sure to remove all dust from fans, heatsinks, the motherboard etc.

I dont think all your sensors have gone bad, but clean the pc and if you know how to then you should probably re-apply thermal paste to the cpu and install the heatsink and fan.

Make sure to route all cables as neatly away as possible as well and if possible install more fans.

Tonight I'll clean the pc and tomorrow morning i'll get a new cpu fan and case fans. Thx alot for ur help bro.