My connection's bandwidth is 56K. My op system is the Chinese version of Windows 7.
1) download Kingsoft antivirus 2012
2) download 360.cn PC Doctor, the green + only.
3) run nr 2 and then run nr 1
4) download iobit toolbox (zip)
5) uninstall nr 2 using iobit uninstaller in toolbox. Re-boot and remove all 360 files from C,D,E disks manually.
5) run iobit reg errors fix (including deep scan)
6) run nr 4 disk clean in safe mode
7) run nr 4 shortcuts fix tool
8) run nr 4 cloned files remove tool in safe mode
9) don't run security holes fix tool of nr 4
10) download C Cleaner
11) run C Cleaner
12) download Wise Care 365
13) run nr 12.
14) download ARO 2013 and run it. Take great care when deleting errors and registry keys, etc - ARO sometimes jumps to the wrong key! If a red cross appears in a pop-up, do not proceed to delete that key! Run ARO, then C Cleaner several times, one after the other, until CCleaner's registry cleaner, the 2nd function, shows as issue-free.
14) download MZ Ultimate Booster
15) download MZ CPU Accelerator, set to run at start-up on 'high priority'.
16) download Auslogics internet optimizer.
17) download Firefox browser
18) apply Adblock + or Adblock Edge to Firefox.
19) open iobit toolbox and set SmartRAM tool to run at startup and in 'smartclean' mode.
20) re-boot automatically by applying nr 16
21) re-boot automatically by applying nr 14