Hi guys I've been tearing my hair out trying to fix a few problems on the in-laws PC. The system used to be incredibly slow in XP Home, applications use dto hang, MSN Messenger wouldnt sign in etc so I formatted the hard drive and installed XP Pro. Its quick again but new problems have arisen. A lot of the time it wont display browser windows until I refresh 3 or 4 times OR display beta.msn which wasnt the default (google is). Also, signing in to MSN Messenger 7.5 can be hit and miss, it works sometimes but other times I think it cancels the broadband connection so I have to reboot to get in. I dont have antivirus yet, as I said its a new XP Proinstallation. I will get AVG soon. I disabled the windows firewall as it created a problem. Theres nothing else on the PC. ps I disabled messenger service as the annoying popups kept happening. Any ideas where to start or is there a free piece of software that can diagnose a fault? Maybe its hardware?