My girlfriends computer had Security Tools virus in it and I was able to remove the virus successfully by using Spybot, Adware, Malware Bytes and Registry Mechanic, now the start up is very slow and a blank blue screen comes up shortly after the "Windows" screen loads, it stays blue for about 4 minutes, then the desktop slowly comes up. I have disabled mostly everything at startup, so only AVG and audio programs load, even the internet explorer is slow to load. I did run a hijack log as well, let me know what other information you need. Thanks in adavance..
AMD Sempron 3000
2 GHZ, 480 MB Ram