Windows 7 goes slow

[Kasya]

Hello,
I have Windows 7 ultimate x64. I mostly play games and surf the internet. But i see that sometimes there is a blue screen of Death (BCOD) when the Welcome appears in Logon and after every BCOD it starts working slow.
Why this happends?

Thanks,
Kasya

 

[Jacee]

Have you checked that all drivers are up to date?
Is your Antivirus program scanning at startup?

Look in 'event viewer' and see if you can find the critical event (BSOD) that occured at bootup.

 

[Sammy]

Check to make sure all your hardware & cables are seated correctly also just to be safe.