Extreme PC Lag

[Toby_9]

Hello,

I have a Dell Latitude E6420 with these specs:
Intel I5 2520M 2.50GHz
Ram: 4Gb
Intel HD 3000 graphics.

When I first got the PC, it was running fine with no speed issues at all and the games that I played ran fine, such as F1 2013, Euro Truck Sim 2, Darkest Hour, etc... These ran at 50-60 fps in Medium/Custom settings. I had some issues like this before, I changed my HDD because I had a "Current Pending Sector" error but the problem still persists. I thought the issue may have been the CPU, as I saw it was getting strained quite a lot (100% even when opening up VLC) but I (think) stopped this problem by making start up stuff Manual. This was also doing it for my RAM but the same fix for the CPU fixed it. So I ruled out the possibility of it being CPU, RAM or HDD. (These might still be the issues, so if they are please tell me )
My graphics could also be an issue but I have no idea how to check. I tried updating my Graphic Drivers, multiple times. I tried deleting my graphics drivers and re-downloading them. I tried pretty much everything ((

Please, someone help me!

 

[_aragon_]

Can u post all your specs using speccy?

Making startup stuff manual should not affect running Vlc . I think your pc must have been infected by malware or virus. And you stopped that virus or malware from auto starting by making everything manual. Download and run malwarebyte + Comodo Cleaning Essentials + hitman pro in safe mode.

 

[Toby_9]

Aragon,

These are my full specs, if you want all the various options just tell me!

Operating System
Windows 7 Édition Familiale Premium 64-bit SP1
CPU
Intel Core i5 2520M @ 2.50GHz 61 °C
Sandy Bridge 32nm Technology
RAM
4.00 Go Dual-Channel DDR3 @ 665MHz (9-9-9-24)
Motherboard
Dell Inc. 0K0DNP (CPU 1) 25 °C
Graphics
Moniteur Plug-and-Play générique (1366x768@60Hz)
Intel HD Graphics 3000 (Dell)
Storage
931GB Western Digital WDC WD10JPVX-00JC3T0 ATA Device (SATA) 38 °C
931GB Samsung M3 Portable USB Device (USB (SATA)) 33 °C
Optical Drives
TSSTcorp DVD+-RW TS-U633J ATA Device
Audio
IDT High Definition Audio CODEC


I will try the malwarebyte + Comodo Cleaning Essentials + hitman pro in safe mode thing. Can a Virus not be linked to the HDD though?

 

[Toby_9]

I tried everything you said and it removed from PuP's but didn't improve the performance any.

 

[hang-the-9]

When you replaced the hard-drive, did you do a clean Windows setup with current drivers from the laptop vendor?