Please help me fix my computer!

Normally, if an update fails, it will be offered up again though windows update for another try. You can't get online so thats not an option at the moment. with all the problems you are having I think I would backup what you want saved to external media and then run the factory recovery utility or do a clean install of Windows. Other options, although I'm not sure they will work are to do a repair install, or run the system file checker, sfc/scannow.
Repair Install
SFC /SCANNOW Command - System File Checker

User, IMO, your computer sounds infected with malware. Have you run any virus scans?

Checking for malware is one of the first troubleshooting steps given in the link below. However OP has not bothered to even respond to the suggestions so apparently isn't willing or ready to do the work.

gregrocker said:

I would work backward using System Restore until I find a time when it was working correctly.

Otherwise work through these troubleshooting steps

gregrocker said:

Checking for malware is one of the first troubleshooting steps given in the link below. However OP has not bothered to even respond to the suggestions so apparently isn't willing or ready to do the work.

gregrocker said:

I would work backward using System Restore until I find a time when it was working correctly.

Otherwise work through these troubleshooting steps

Gotcha Greg. I just hate to see people going in an opposite direction when I'm sure it's a malware issue that can be corrected..... Good advice is only useful if someone takes it.

Hey guys! Sorry for the late reply, I was caught up with work. I used the Windows 7 Home Premium retail installation disc's repair option. My system is now working fine. I am pretty sure that the problem was from an incomplete service pack upgrade which corrupted my system. Thanks for all your help!