Hello, As i saw Andre you managed to fix some computers around here. I would also like some assistance from you as I kind of encounter the same problems but cannot fix them. Laptop : Toshiba F750-118 Problems : Laptop laggs 1-2-3 seconds when I play games(interval of 5-20 minutes), or watch videos on internet. I am using the ethernet cable most of the times,having the wireless stopped. But the problems are also when i am using the wireless. I cannot do the xperf command as the problems are having periods of 5-20 minutes. I used latency monitor to determine what is causing this problems and after one hour i had this : Driver file                Description                                                                                       ISR count  DPC count  Highest execution (ms)  Total execution (ms)  Image base           Image size  Company                                                                                   Product                                                              Path                                            ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ ndis.sys                   NDIS 6.20 driver                                                                  0          625392     63.819362               4600.180487           0xFFFFF880'0160A000  991232      Microsoft Corporation                                                             Microsoft® Windows® Operating System                                 C:\windows\system32\drivers\ndis.sys            tcpip.sys                  TCP/IP Driver                                                                     0          125583     31.551611               3551.584738           0xFFFFF880'01800000  2097152     Microsoft Corporation                                                             Microsoft® Windows® Operating System                                 C:\windows\system32\drivers\tcpip.sys           ACPI.sys                   ACPI Driver for NT                                                                1699       4188       10.086903               59.108433             0xFFFFF880'00F6C000  356352      Microsoft Corporation                                                             Microsoft® Windows® Operating System                                 C:\windows\system32\drivers\acpi.sys            mfefirek.sys               McAfee Core Firewall Engine Driver                                                0          115        1.749973                53.884332             0xFFFFF880'08200000  479232      McAfee, Inc.                                                                      SYSCORE                                                              C:\windows\system32\drivers\mfefirek.sys        As far as i figured out when the computer is lagging it is affected only by ndis.sys. Even if the ACPI is high that doest makes my computer lag