Thanks for that,everything seems ok on scan, but it has still not removed istart. look forward to your reply. Malwarebytes Anti-Malware www.malwarebytes.org Scan Date: 24/08/2014 Scan Time: 16:21:19 Logfile: Administrator: Yes Version: 2.00.2.1012 Malware Database: v2014.08.24.02 Rootkit Database: v2014.08.21.01 License: Premium Malware Protection: Enabled Malicious Website Protection: Enabled Self-protection: Disabled OS: Windows 8.1 CPU: x64 File System: NTFS User: Bob Payne Scan Type: Threat Scan Result: Completed Objects Scanned: 321213 Time Elapsed: 30 min, 8 sec Memory: Enabled Startup: Enabled Filesystem: Enabled Archives: Enabled Rootkits: Enabled Heuristics: Enabled PUP: Enabled PUM: Enabled Processes: 0 (No malicious items detected) Modules: 0 (No malicious items detected) Registry Keys: 0 (No malicious items detected) Registry Values: 0 (No malicious items detected) Registry Data: 0 (No malicious items detected) Folders: 0 (No malicious items detected) Files: 0 (No malicious items detected) Physical Sectors: 0 (No malicious items detected) (end)