Install Service pack 1.
Learn how to install Windows 7 Service Pack 1 (SP1) Service Pack Center - Microsoft Windows
Windows 7 Kernel Version 7600 MP (6 procs) Free x64
Product: WinNt, suite: TerminalServer SingleUserTS
Built by: 7600.17118.amd64fre.win7_gdr.120830-0334
It is caused by Symantec Real Time Storage Protection.
fffff880`0354c568 fffff880`07ce3110Unable to load image \SystemRoot\System32\Drivers\N360x64\0502020.003\SRTSP64.SYS, Win32 error 0n2
*** WARNING: Unable to verify timestamp for SRTSP64.SYS
*** ERROR: Module load completed but symbols could not be loaded for SRTSP64.SYS
It is protecting your storage discs in such a strong way that they are failing to perform perfectly.
I would suggest you to uninstall Norton and all Symentec products using Norton Removal tool
. Use Microsoft Security Essentials
as your antivirus with windows inbuilt firewall, and free MBAM
as the on demand scanner.
Download and install those, and then run full system scans with both of them, one by one.
Let us know the results.