|" I ran a scan and found 4 viruses " |
What scanner did you use ? , Most have a vault and you can see what virus's were quarantined , It is possible that false positive is to blame , It could also be that you still have malware of some kind .
If for example it was a f\p then you could then undo the removal and use system restore to put the values back .
Try a scan with MBAM