hello everyone im new to the forums and wandering if anybody can help me with this problem,,my first language is portugese so ill do my best with english,,,Anyway after I went from 4 gigs of ram to 8 gigs my computer will not boot and not even using the original ram is it booting ,,now im stuck cause it will not even boot from boot menu or the original windows 7 disc ,,,always shows the same error no matter how I try to boot and it will not reinstall windows 7 ,,it says the boot selection failed cause a required device is missing,,,and when I do a memtest it says I got corrupt memory ,,,so I dont know what to do now cause I cant system restore or boot from disk ,,only thing I could do is boot on safemode and the os loads then crashes,,,,please HELP! thanks.