Various programs stops working

Hi all,

My Desktop (2GB Ram - Intel (R) G41 Express Chipset - ACPI x64 - 80gb HD) was running just fine with XP up until a few days ago. Then all of a sudden when i booted up all i would see is my wallpaper and no icons or taskbar, Got Icons & Start menu trying by restarting manually and then certain programs like Tally ERP9 & MS Office 2007 would not open.

So after formating tried fresh instal of Windows 7, To see if upgrading to Win 7 would help me. Whilst it certainly erased the missing taskbar and icon problem.

Now the problem of Programs (Installed only MS Office 2007 - by CD, Tally ERP9 - by CD, Chrome, Mozilla [Downloaded from net, latest versions] & all these stopped working) Not Working/Stopped came back. The programs would work once and function perfectly after they installed, then would not open thereafter.
(All programmes of Win7 works fine like Notepad, IE)
Upgraded MS Office 2007 to 2010 but same problem.

Tried
Several more fresh installs of Win 7 after formatting HD
Scanned all Programmes I installed
Closed Firewall, auto updating
But still same problem.

Please help

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gajendra72, There are no dump files in the logs you uploaded. Those are what we work from. I need to know what hardware you have

Please fill out your System Specs

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If you have a BSOD please upload again the
Blue Screen of Death (BSOD) Posting Instructions

Did you build this machine yourself? Uninstall Skype and see if Office works.

If Office starts working after uninstalling Skype, go to Skype | Free calls to friends and family and download Skype for Windows.

Have you much experience using the command prompt? Also, where did you get your Windows installation disk? And your Microsoft Office Disk?