Windows 7: Start Menu Icon Never Load

After a clean install of Windows 7 (x64), the start menu icons never (or take extremely long) to load the first time after opening them. This primarily happens at Start button > All programs (and the folders within all programs). After the first time, they load normally. This happens each time I restart my computer. The memory isn't a problem as I have 4gb of it. The icons/thumbnails of all my other programs/pictures appears to be fine too. Any help please?

maybe startup programs or anti-virus could be causing the delay?

Yeah, you should download an anti-virus program if you don't have one already. You should also download Malwarebytes and a spyware detector like AdAware.

Once you run all of these programs and clean your system, test again, if you're still having trouble loading your start menu then you can start diagnosing WIndows services to see if they're the problem.

Go to Start > Search "msconfig" > Enter

Now choose a selective startup and disable half of the services. If you computer boots normally, then you know that one of the services you disabled was the problem. If not, enable the services you disabled and disable those you did not. If you boot properly now, you know the bad service is in the secondary list. Once you find the bad service you can search for a solution via the web or just disable the service permanently.

I have an antivirus (Panda antivirus) and previously I had Avira. I have done full system scans with them and nothing comes up tagged. I have also tried disabling services to find the cause but it still happens with every non microsoft service disabled and every application removed from startup.

Any help? I've done sfc /scannow with no bad results, defragged my drive, and tested it on a new user. It still happens.