Please start by running these hardware diagnostics: Memory Diagnostics
(read the details at the link) HD Diagnostic
(read the details at the link)
Also, please run one of these free, independent online malware scans to ensure that your current protection hasn't been compromised: Malware
(read the details at the link) MSINFO32:
Please go to Start and type in "msinfo32.exe" (without the quotes) and press Enter
Save the report as an .nfo file, then zip up the .nfo file and upload/attach the .zip file with your next post.
If you're having difficulties with the format, please open an elevated (Run as administrator) Command Prompt and type "msinfo32 /nfo C:\Users\Public\Desktop\TEST.NFO
" (without the quotes) and press Enter. Then navigate to the C:\Users\Public\Desktop directory to retrieve the TEST.NFO file. If you have difficulties with making this work, please post back.