Recently I have a major lagging problem with my XPS L501x unlike before. It lags in everything: browsing, gaming, opening files, Ctrl+F in txt files takes too long to open, even the right click lags, watching youtube videos, games, programs, applying settings on anything, playing music and video files, switching between tabs in any browser, opening folders, typing, etc..
I tried everything but the problem still exists. I formatted all the hard drive with all partitions and done a clean Windows 7 Home Premium 64-Bit Installation, updated all the drivers definitions and installed windows updates but problem wasn't resolved. I ran dell diagnostics by pressing the F12 key while starting up and it passed all the tests, updated the BIOS to A08. Also cleaned all vents to remove dust and used a cooling pad under the laptop but the problem still exists. So I decided to send it to dell tech support. They wouldn't able to solve the problem.
I uninstalled the Intel Rapid Storage Driver as I found that this may help but with no luck too.
Any suggestions please?
My Laptop Specs:
Intel Core i7 1.73 GHz with TurboBoost
RAM: 6GB
Nvidia GeForce GT 435M 2GB Dedicated.
Toshiba Hard Disk: 640GB