Fresh win7 pro 64bit, HP 450 G2, has irritating lag and slowness

have you run "sfc/scannow" to c if there r any prob? what anti virus scans have u ran?

You don't need to disable any services.

Go through Clean Reinstall - Factory OEM Windows 7 in order to see if your install is similar.

Anything in Resource Monitor that catches the eye? Especially in CPU (sort both Processes and Services by CPU), Memory (sort by Working Set) and Disk (check both read and write) tabs.

Is Windows up-to-date? SP1 installed? Any .Net framework updates recently installed (may be running the optimizations). Especially check "svchost.exe (netsvcs)" in Resource Monitor since this can be causing problems on some fresh systems.

Have only 1 AV simultaneously. You can get Malwarebytes Anti-Malware as a supplement to your AV though.

Thanks a lot for answers.
About the Clean Install; I might've forgot to say that I called to HP's office and incisted that they'll send me Clean Install for 64bit (I always do this, but didn't have 64bit install disk at shelf)

So they sent me the windows install disk and the manufacturers drivers & applications DVD.

So I've been in the impression that I've Clean Installed my system. After installing it, the system looks clean as always; just disabling some LMHOST lookup and NetBios settings from TCP IP 4. I usually disable & uninstll everything from else from my (wireless) network connection properties except TCP IP 6 & 4. This has worked so far,.. (so QoS, Client for MS networks & sharing, topologies... all disabled... This time I've tried also not to disable these, but didn't help me with "lag&slow".

So at this point, there are only 3 devices w/o drivers (at device manager). I installed the newest drivers from manufacturers website, but this didn't help at all.

ONLY thing I haven't updated - just noticed it now - is BIOS. hmm... maybe I should do it today...

I've installed all the updates windows update offers me. that's about 200 updates...

I use Sysinternals Process Explorer to see wtf is happening under the lid As you guessed, svchosts are shown to eat quite a lot of memory and potentia. There are 11 separate svchosts running; and these are eating the most of memory; Cryptographic services (CryptSvc), DNS Client (Dnscache), Network Location Awarness (Nlasvc), Telephony (TapiSrv), Workstation (Lanman workstation)

I've used only AV the time. (so far F-Secure, Malwarebytes, Defender... ) Aside of this, I'd like to underline, that I haven't had a singel virus since form-virus about 20 years ago :)

About framworks;

GokAy, thanks for the link and all your efforts. I'll read the link well through later today and will get back to the issue.
about .NET frameworks; 4.6 and 3.5.1 are updated and installed...

got to go for now... but will come back later to continue...

again thanks a ton!!!

So at this point, there are only 3 devices w/o drivers (at device manager). I installed the newest drivers from manufacturers website, but this didn't help at all.

May or may not be important. In Device Manager for these unknown devices - properties - details - Hardware Ids from the list and copy paste here (or check in PCI Vendor and Device Lists the VEN_ and DEV_ numbers).

There will be many more updates, keep manually checking until they are not offered any more. However, Windows Update may need a little update itself first. That's why open a Resource Monitor , switch to CPU tab (sort both Services and Processes) and check if svchost.exe (netsvcs) consume a constant 25-50% CPU time. Then also check the Memory tab for it. No need to go into detail for those just yet (after you check).

.Net updates usually start a one time optimization routine/scan after restarting upon updating. Those may be another reason for slowness.

Hi, and thanks again for your quick reply. Currently there's only one unknown device, and Hardware Ids are:
ACPI\INT33A0
*INT33A0

And yes, I continue updating everything that keeps coming. Lately there has been only defender updates coming. Besides update, I started this time with downloaded updates - using WSUS. After that, I continued with update. (Not sure, but I think this might've helped with windows update, that didn't run as smooth in my previous attempt, where I didn't use WSUS. If I remember correctly, on that time windows update seemed to have some problems...)

Oh, forgot to mention, that I've uninstalled Internet Explorer and thus haven't installed the downloads for Internet explorer either. (I haven't had problems with this ever before. And I usually do it immediately after installing windows)

Currently no constant CPU load with any processes. On memory tab; svchost.exe (netsvcs) is sixth on the list, with memory Commit of 39 700 KB.

At the moment there's no constant awful lag. I should try to enter facebook and look what problems it will provide... my gut feeling is, that FB has something to do with problems linked to network connections.

I'd also like to know, what processes & software I can get rid of, without sacrificing stability. Strong dislike for all spyware...

Oh, just logged in to facebook and lag is here again... looking the resource monitor and;
on Memory tab;
Firefox, HPconnectionManager.exe (Do I really need this?), svchost.exe (secsvcs), svchost,exe (Network Service), explorer.exe, svchost.exe (netscvs)... these are consuming the most memory.

Internet traffic seems to lag...

Oh, just logged in to facebook and lag is here again... looking the resource monitor and;
on Memory tab;
Firefox, HPconnectionManager.exe (Do I really need this?), svchost.exe (secsvcs), svchost,exe (Network Service), explorer.exe, svchost.exe (netscvs)... these are consuming the most memory.

Internet traffic seems to lag...

Actually it killed the whole network connection for a while. I had to disconnect manually, close the FB tab, and reconnect to Wifi, to get Internet working again. (Nothling loaded after the FB)

Did you install Intel related drivers/software from laptop site? Like:
Management Engine
Rapid Storage Technology
Chipset driver
etc

I think so. I'll double check.