I have just upgraded my pc to an xp1800, msi kt3 Ultra, Geforce 4 TI4400, 256Mb Pc2100 DDR Ram. I am still using an old Seagate 66ATA 40Gb hard drive. Will this be the weakest link and explian why my PC is crashing? Should I upgrade the HD? I have the FSB set to 146. The processor runs at 47 degrees under load. I had a benchmark scores of approx 10500.