PC lags and freezes all the time

[antrikkos]

pc spec :

laptop
win 7
4gb ram
ati radeon hd 4500
64 bit version
intel core 2 duo cpu t6600 @2.20ghz & 2.19 ghz

it boots normally but after 2-3 mins it starts lagging .It becomes extremely slow and every program running will not respond. It stucks at all and fixes after 1-2 minutes. But it stucks again and again . As a result , i have to turn it off from the boot up button . I have this problem within the last 2 months . But now the situation is worst than ever . Whenever this problem cames up it remains for 4-5-6 days and then leaves . But it comes again. This problem disappears while in safe mode . Btw all the drivers are updated. My antivirus is active . I cant think what is the reason for this issue. I hope you can help me . pls reply asap. thank you

 

[Route44]

For clarification, the PC has no lagging in Safe Mode, correct?

 

[antrikkos]

yes. the pc has no lagging on safe mode

 

[Route44]

Usually this is a sign of driver issues and/or infection. Run a full security scan and get back to us with the results.

 

[antrikkos]

i did full scan as requested . The results was : no threats detected.

 

[Route44]

What security software are you running?

 

[antrikkos]

Kaspersky internet security 2010. Please don't tell me i will have to buy new antivirus.

 

[Route44]

No, not at all, Kaspersky is excellent. Run it. We're checking for infections.

 

[antrikkos]

what do you mean? I ran but no infections found . please be more specific

 

[Route44]

Do the following:

Start > Run > type in EventVwr.msc > Okay

Now check for Yellow Triangles and/or Red Xs and note what they flag.

Also, how large is your harddrive and how much space is free?

 

[antrikkos]

I checked on custom views , windows logs , applications and services but i did not find any red xs or yellow triangles . There is 60 gb free of 149.