Computer Browser was indeed not running, so I set it to automatic and press start. Then I goto to Microsoft Windows Network --> Workgroup still no PC's. So I check the other PC's, and there it's working fine. So I try to use \\[computername] which gives a error: Weird so I try to ping that PC, and I get 4 successful responds. So I tried something else, went to a working PC and opened up services.msc, and looked at all the started services, these services I also started at the non-working PC, this also had no effect. To be sure I also compared the gateway, subnet and gateway these were all the same, I also looked if they used WORKGOUP (not MSHOME or something else) this was also the same. Something else I also notice is that the browsing from entire network --> Microsoft Windows Network --> Workgroup goes very fast, it's instantly. On all the other working PC's you've got to wait a second after you click on Microsoft Windows Network and also on Workgroup.