Windows 7: Need some help please computer running really slow

I have a windows 7 home premium 64 bit
intel (R) cpu 450 @2.20 GHz /2.19 GHz
internal 2.00 GB
For the first 5 minutes the computer is on it runs real nice but after that everything slows down, I am running Mozilla firefox, I have Microsoft securtiy essentials running only i had kasperspy and norton but they dont make any difference i did scans for viruses on both norton and kas... but nothing came up... I also went to accessories and hit RUN ...mconfigu and hid all microsoft running programs and checked all the rest of the files restarted my computer and still i have the same problem what should i do now is there anything else or do i need to get a restore disk??

You can only keep one anti-virus... You'll now have to uninstall the other two,, Cancel some startup options & restart..

Run : msconfig.exe (startup tab)

Run: cmd "then" sfc /scannow

What does it give you,,

The best way for uninstalling the Anti-virus would be with the removeltools for them.. Can be found on their site..(Norton's & Kaspersky's)

Your running the minimum spec of memory for the windows,upgrading your RAM would be a good idea.

But for now even with anti-virus managing software more than 1 anti-virus seems to be your prob here.

Keep 1 & if your worried about spam & others.. Download & install malwarebytes anti-malware

I deleted kaspersky and norton I am only running microsoft security essentials, I am restarting computer right now i'll let you know thank you

computer seems to be running nicely, Im hoping this will work thank you so much for your help i'll look into removing the whatever is not needed for norton and kaspersky

As you found out the hard way only 1 antivirus should run.

Glad its sorted..And welcome to the forums.

SmurofNeves the comp ended up doing the same thing so I found out the problem omg well i took the computer to best buy they said i had a virus that was B.S. anyway so i opened task manager and looked what was processing on the computer that slowed down my CPU it was wmpnetwk.exe which is windows media player so i went to youtube and researched it and it showed me what to do lol thanks so much for your help here is the website if you wanna look at what i was talking about YouTube - How to Remove/Disable wmpnetwk.exe from your Windows 7 PC

change your anti virus... go for eset..

then use tune up utilities,

use autoruns to disable unused services, and unused start up programs

I'd recommend to maintain your computer get theres programs
CCleaner- cleans all the garbage you don't need as well as deleting old system restores
Defraggler- Disk defrag app. you can use which ever one you'd like however regardless it's good to maintatin your
system
Malwarebytes- Good program to coinside with your AV
Also Note if any problems persist don't be afraid to format your hdd and do a fresh install of windows do that should bring back your system up to normal speeds again
Good Luck
Jose