Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.
i am using win XP and secondly i know 1000!=1024 but that does not mean i wil loose 600 mb and one more thing it'a actualy a 4.3 GB hdd windows showing as 4.00 GB already making up for 1mb=1024kb
Aside from making sure there aren't any massive stashes of temp files or crud in your recycle bin, see how large your pagefile is. Windows has a nasty habit of not adding it into used space calculations in certain circumstances.