I am trying to figure out how to reinstall windows seven on this desktop it is a acer aspire x3400
acer aspire AX3400-B2802
Windows 7 home premium edition 64-bit
AMD ATHLON II X3 425
TRIPLE CORE PROCESSOR
NVIDIA GEFORCE 9200
IT SAYS PLEASE INSERT BOOT MEDIA AND PRESS ANY KEY PLZ I NEED HELP IM GOING CRAZY. I think i just need a driver but acer is the worst website so if theres any one with this problem help would be great thanks in advance .