Laptop extremely slow after replacing Graphic card

[avi_bhardwaj]

Dell Inspiron 1520
Graphic Card-NVIDIA GeForce 8600M GT
my old graphic card got some issues (white screen) 3-4 times i gave my laptop for repair, after repair it worked fine for nearly 1 month but after that same problem. so i decided to replace graphic card and luckily i found same graphic card on amazon so after replacing it my laptop is super slow, i cannot even watch video on youtube (lagging issue).
Please help me out i cannot afford new laptop or even new graphic card.
Any solution?

 

[Laptop_Nerd]

Hi,

Try to uninstall/reinstall the graphics card driver.
- Go to Device Manager and uninstall the NVIDIA graphics driver.
- Open Programs and Features and uninstall anything related to your graphics card and your old one as well.
- Download and install the latest driver from NVIDIA support site
- Here's the link:nvidia.com/download/index.aspx
- Reboot your PC once installed for all the changes to take effect.

 

[avi_bhardwaj]

Hi,

Try to uninstall/reinstall the graphics card driver.
- Go to Device Manager and uninstall the NVIDIA graphics driver.
- Open Programs and Features and uninstall anything related to your graphics card and your old one as well.
- Download and install the latest driver from NVIDIA support site
- Here's the link:nvidia.com/download/index.aspx
- Reboot your PC once installed for all the changes to take effect.

Thanks for replying @Laptop_Nerd
I have tried reinstalling driver and even fresh windows(7,8) also, but nothing works.
if i work(using internet etc) on system, almost all the time its CPU usage will reach to 100%

 

[hang-the-9]

Did you clean out the system and check for heat issues? A failing hard drive will also cause slowness. If this happened right after you replaced the video card, you may have bought a bad card.