Extended tab of services.msc /gpedit.msc is blank

I am facing this problem with my Windows 7 Pro x86 installation. The extended tab of services.msc / gpedit.msc are blank. I did a repair install and for some time things were running normally. Today, I find that the same problem has surfaced once again.

Is there any fix for this problem? Or is repair install the only way out?

Here is a screenshot of the issue - http://i.imgur.com/VIDFZ.jpg

I am using KAV 2012as my AV. Scanned the PC with combofix in safemode and did a sfc scan too. Everything seems to be okay in those aspects. Ever since this issue cropped up, I am unable to use yahoo messenger. The windows gadgets also does not load. IE 9 too acts wierd; I have to try a couple of times for a webpage to load.

Hi neevarp, welcome to WhatTheTech.

How does it behave if you boot to Safe Mode with Networking? If better then something is starting at boot that is causing the problem.

Advanced startup options - XP
Advanced startup options - Vista
Advanced startup options - Windows 7

Use msconfig to determine what is causing the problem

These are good tutorials on using msconfig in XP, Vista or Windows 7:
How to use msconfig in Windows XP
How to use msconfig in Windows Vista
How to use msconfig in Windows 7

Click on Start then Run, type msconfig and press Enter.
Click on the Startup tab, record what is currently starting then click the Disable All button.
Reboot and see if it runs better.
If yes then use msconfig to enable several items at a time till you find the culprit.

If no, start msconfig and click on the Services tab.
Check the Hide All Microsoft Services box, record what is currently starting then click the Disable All button.
Again, do a regular boot, see if it runs normal.
If yes then use msconfig to enable services till you find the culprit.

Once you've found the culprit, uninstall it or find out how to eliminate it from your system. Simply disabling it in msconfig is a temporary fix at best.
Enable everything else you disabled.