Hiya pal, if F8 isn't working for you try this.
Close all open programs
Click Start, Run and type MSCONFIG in the box and click OK
The System Configuration Utility appears, On the BOOT.INI tab, Check the "/SAFEBOOT" option, and then click OK and Restart your computer when prompted.
The computer restarts in Safe mode.
Perform the troubleshooting steps for which you are using Safe Mode.
When you are finished with troubleshooting in Safe mode, open MSCONFIG again, on the BOOT.INI tab, uncheck "/SAFEBOOT" and click OK to restart your computer