Hi I have 3 years old Toshiba L300-D. 1 year back I upgraded vista to windows 7 Home premium. 3 days back I had problem - my starting windows page was hanged and was not proceeding forward, also All types of safe mode was getting stuck on classpnp.sys. After reading many forums I booted with USB (mounted with windows 7) and used command prompt and deleted all "pcmcia" realted files from C drive. Now using F8 function I can't use any option (all option safe mode, low resolution, startup repair,etc won't work, even changes in Bios setting won't work). Also now while booting my PC with USB, after starting windows page, black screen appears with white arrow and it won't go further this black screen so now I can't even use command prompt & Installation option . Now I don't know what to do :( Any help will be appreciated :)

Hi, Classpnp.sys is the driver for SCSI devices. Due to this Classpnp.sys your computer hangs at the "Starting Windows" screen. This problem may occur in many scenarios. These scenarios include the following: •The registry is corrupted. •A System file is missing or damaged. •A device driver file is missing or damaged. To fix this issue, you could perform an In-Place Upgrade to repair your Windows 7: How to Perform an In-Place Upgrade on Windows Vista, Windows 7, Windows Server 2008 & Windows Server 2008 R2 Please refer the following: http://social.technet.microsoft.com/Forums/en/w7itproinstall/thread/cc4f4e17-5db2-4d05-bd2d-ba02173912cb http://answers.microsoft.com/en-us/windows/forum/windows_7-performance/windows-7-hangs-on-startup/12b2cc64-bdaf-4183-9a0d-22a73b72f6d6 Hope that helpsWilliam Tan TechNet Community Support

Hi, Classpnp.sys is the driver for SCSI devices. Due to this Classpnp.sys your computer hangs at the "Starting Windows" screen. This problem may occur in many scenarios. These scenarios include the following: •The registry is corrupted. •A System file is missing or damaged. •A device driver file is missing or damaged. To fix this issue, you could perform an In-Place Upgrade to repair your Windows 7: How to Perform an In-Place Upgrade on Windows Vista, Windows 7, Windows Server 2008 & Windows Server 2008 R2 Please refer the following: http://social.technet.microsoft.com/Forums/en/w7itproinstall/thread/cc4f4e17-5db2-4d05-bd2d-ba02173912cb http://answers.microsoft.com/en-us/windows/forum/windows_7-performance/windows-7-hangs-on-startup/12b2cc64-bdaf-4183-9a0d-22a73b72f6d6 Hope that helpsWilliam Tan TechNet Community Support