Windows not loading after log in

Age of System:

Code:

BIOS Version/Date	Dell Inc. A16, 10/16/2008

Due to the age of your hardware, I would suggest checking that it is compatible with Windows 7: Windows 7 Compatibility: Software Programs & Hardware Devices: Find Updates, Drivers, & Downloads -> Download and run the Windows 7 Upgrade Advisor.

Also, make sure all Windows Updates are installed. I see Service Pack 1 is not installed yet.

• Update to Service Pack 1 (SP1)
  
  Download Details - Microsoft Download Center - System Update Readiness Tool for Windows 7 (KB947821) [August 2011]
  
  Download Details - Microsoft Download Center - System Update Readiness Tool for Windows 7 for x64-based Systems (KB947821) [August 2011]
  
  Steps to follow before you install Windows 7 Service Pack 1 from the Microsoft Download Center
  
  Service Pack 1 Download site

Device Concerns:

Code:

avast! Network Shield Support	ROOT\LEGACY_ASWTDI\0000	This device is not present, is not working properly, or does not have all its drivers installed.
Security Processor Loader Driver	ROOT\LEGACY_SPLDR\0000	This device is not present, is not working properly, or does not have all its drivers installed.

The above are likely a result of being in Safe Mode.

Software Concerns:

Code:

Start Menu\Programs\Smart PC Cleaner	Public:Start Menu\Programs\Smart PC Cleaner	Public

• Many of us on the forums actually do not recommend automated optimization tools for Windows 7. Windows 7 does a much better job of handling its own optimization than its predecessors did. We especially do not recommend registry cleaning as an "optimization" step because automated registry cleaning causes more harm to the registry than it actually repairs.
  
  In the future, if you need help optimizing Windows 7, please post a thread in Performance & Maintenance - Windows 7 Forums or follow the tutorial enclosed in that forum to Optimize Windows 7.

Analysis

Your BugChecks are all the same and indicate a corrupted Windows installation. You may be able to salvage it, but I have doubts. Still, we should try.

• Check Windows for corruption. Run SFC /SCANNOW Command - System File Checker up to three times to fix all errors with a restart in between each. Post back if it continues to show errors after a fourth run or if the first run comes back with no integrity violations. Use OPTION THREE of SFC /SCANNOW Command - System File Checker to provide us with the sfcdetails.txt file if errors occur.
  
  
• I suspect the problem is due to the Smart PC Cleaner software damaging the Windows installation and programs installed on Windows. However, it could be hard disk related.
  
  Run Disk Check with both boxes checked for all HDDs and with Automatically fix file system errors checked for all SSDs. Post back your logs for the checks after finding them using Check Disk (chkdsk) - Read Event Viewer Log (you may need to search for wininit instead of chkdsk).
  For any drives that do not give the message:
  Windows has checked the file system and found no problems
  run disk check again as above. In other words, if it says:
  Windows has made corrections to the file system
  after running the disk check, run the disk check again.
  
  
• Run all Basic tests with SeaTools: S.M.A.R.T. Check, Short Drive Self Test, Drive Information, Short Generic, and Long Generic. Run the tests for all HDDs.
  SeaTools for Windows
  
  SeaTools for DOS

Smart PC Cleaner:

This appears to be a rogue antivirus/anti-malware/antispyware program that causes severe security vulnerabilities. I strongly urge you to start a thread regarding it in System Security | SevenForums