TestingJohn

I have a MSI GT 663 and i got the wonderfull idea of going into the advanced BIOS settings by pressing CTRL+SHIFT+ALT+INSERT. I worked.... yayyy..... i know that you dont want to mess around with these settings if you dont know what you're doing so i didnt change anything. When i left the BIOS and let it boot again................... nothing happened........ lights on but black screen. So, now what to do? Any Suggestions? I have tried removing power, battery, cmos battery, ram, videocard, cpu, fanplug. Let it sit overnight. Still the same result, Lights on but black screen. I have previous experience with this on another laptop of another brand and what worked for me then was a blind flash of the BIOS. I dont know how to do this on MSI GT663 however and have not been able to find a .ROM file with the BIOS to use. Secondly, what should i do on boot? What keys to press to get it to load from USB Stick.