Whenever I try to run a Windows program, with the exception of Windows Live Messenger, Windows Installer opens. Then I get a message that it cannot be opened.

Then I get a message that it cannot be opened.  It started with Office Word 2007, now it seems to touch almost all Windows programs.

Looks like you may have a virus or other malware. Get your updated antivirus program and boot into Safe Mode. Note that some viruses can hide from your normal antivirus program, so you really need to scan in Safe Mode. To enter in Safe Mode when you turn on first, press F8 on every seconds until you get the menu, and then select Safe Mode. Then run a complete system scan.

Microsoft has suggestions and offerings to

http://Windows.Microsoft.com/en-us/Windows7/how-do-I-remove-a-computer-virus

Moderator Forum Keith has a few suggestions along this line to

http://answers.Microsoft.com/en-us/Windows/Forum/Windows_7-performance/Windows-Explorer-has-stopped-working/6ab02526-5071-4DCC-895F-d90202bad8b3

If that suits him fine. If this is not the case, use system restore to go back to an earlier date at the beginning of the problem. To run system restore, click Start-> programs-> Accessories-> System Tools-> system restore. Click on the box that says show more restore points.

You can check the corrupted system files. Open an administrator command prompt and run SFC if the above does not help. Click START, and then type sfc in the search box, right-click to SFC. EXE and click run as administrator. Then, from the command prompt type sfc/scannow.

Finally if all else fails, you can look at the rather cryptic system event log. To make, click Start-> Control Panel-> administration-> event viewer tools. Once in Event Viewer system log-click and scroll entries looking for these "error" with indicator see if you can find guidance on where the problem may be.

I hope this helps. Good luck.

Tags: Windows

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