Hya 1878, welcome to PCHF.
Give this a try:
1.Click Start, point to Programs, point to Accessories, point to System Tools, click System Information, and then click System File Checker on the Tools menu.
2.Click the following option:
Scan For Altered Files
3.Click Settings, choose the configuration you want to use in System File Checker Settings, click OK, and then click Start.
Or to have a look for malware problems, please click on the 'Prework' link below in my sig, follow those instructions and post the resulting 2 log files.