How to remove xjb3.exe ?

Viruses and worms
1

I have this file on my PC and it has made my PC slower. I use Avast free edition, but i cannot delete or remove this file. pls help me

2

Try this

Malwarebytes Anti-Malware 1.46 http://filehippo.com/download_malwarebytes_anti_malware/
always update so you have latest database before you scan
click the remove selected button to quarantine anything found
you may post the scan log here if anything is found

3

Before running MBAM:
You could also check the offending/suspect file at: VirusTotal - Multi engine on-line virus scanner and report the findings here the URL in the Address bar of the VT results page.

If multiple scanners on virustotal detect something in this file - Send the sample/s to avast as a Undetected Malware:
Open the chest and right click in the Chest and select Add, navigate to where you have the sample and add it to the chest (see image). Once in the chest, right click on the file and select ‘Submit to virus lab…’ complete the form and submit, the file will be uploaded during the next update.